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java.lang.Objectjava.awt.Component
java.awt.Container
javax.swing.JComponent
javax.swing.JTable
The JTable
is used to display and edit regular two-dimensional tables
of cells.
See How to Use Tables
in The Java Tutorial
for task-oriented documentation and examples of using JTable
.
The JTable
has many
facilities that make it possible to customize its rendering and editing
but provides defaults for these features so that simple tables can be
set up easily. For example, to set up a table with 10 rows and 10
columns of numbers:
TableModel dataModel = new AbstractTableModel() { public int getColumnCount() { return 10; } public int getRowCount() { return 10;} public Object getValueAt(int row, int col) { return new Integer(row*col); } }; JTable table = new JTable(dataModel); JScrollPane scrollpane = new JScrollPane(table);
Note that if you wish to use a JTable
in a standalone
view (outside of a JScrollPane
) and want the header
displayed, you can get it using getTableHeader()
and
display it separately.
When designing applications that use the JTable
it is worth paying
close attention to the data structures that will represent the table's data.
The DefaultTableModel
is a model implementation that
uses a Vector
of Vector
s of Object
s to
store the cell values. As well as copying the data from an
application into the DefaultTableModel
,
it is also possible to wrap the data in the methods of the
TableModel
interface so that the data can be passed to the
JTable
directly, as in the example above. This often results
in more efficient applications because the model is free to choose the
internal representation that best suits the data.
A good rule of thumb for deciding whether to use the AbstractTableModel
or the DefaultTableModel
is to use the AbstractTableModel
as the base class for creating subclasses and the DefaultTableModel
when subclassing is not required.
The "TableExample" directory in the demo area of the source distribution
gives a number of complete examples of JTable
usage,
covering how the JTable
can be used to provide an
editable view of data taken from a database and how to modify
the columns in the display to use specialized renderers and editors.
The JTable
uses integers exclusively to refer to both the rows and the columns
of the model that it displays. The JTable
simply takes a tabular range of cells
and uses getValueAt(int, int)
to retrieve the
values from the model during painting.
By default, columns may be rearranged in the JTable
so that the
view's columns appear in a different order to the columns in the model.
This does not affect the implementation of the model at all: when the
columns are reordered, the JTable
maintains the new order of the columns
internally and converts its column indices before querying the model.
So, when writing a TableModel
, it is not necessary to listen for column
reordering events as the model will be queried in its own coordinate
system regardless of what is happening in the view.
In the examples area there is a demonstration of a sorting algorithm making
use of exactly this technique to interpose yet another coordinate system
where the order of the rows is changed, rather than the order of the columns.
As for all JComponent
classes, you can use
InputMap
and ActionMap
to associate an
Action
object with a KeyStroke
and execute the
action under specified conditions.
Warning:
Serialized objects of this class will not be compatible with
future Swing releases. The current serialization support is
appropriate for short term storage or RMI between applications running
the same version of Swing. As of 1.4, support for long term storage
of all JavaBeansTM
has been added to the java.beans
package.
Please see java.beans.XMLEncoder
.
Field Summary | |
static int |
AUTO_RESIZE_ALL_COLUMNS
During all resize operations, proportionately resize all columns. |
static int |
AUTO_RESIZE_LAST_COLUMN
During all resize operations, apply adjustments to the last column only. |
static int |
AUTO_RESIZE_NEXT_COLUMN
When a column is adjusted in the UI, adjust the next column the opposite way. |
static int |
AUTO_RESIZE_OFF
Do not adjust column widths automatically; use a scrollbar. |
static int |
AUTO_RESIZE_SUBSEQUENT_COLUMNS
During UI adjustment, change subsequent columns to preserve the total width; this is the default behavior. |
protected boolean |
autoCreateColumnsFromModel
The table will query the TableModel to build the default
set of columns if this is true. |
protected int |
autoResizeMode
Determines if the table automatically resizes the width of the table's columns to take up the entire width of the table, and how it does the resizing. |
protected TableColumnModel |
columnModel
The TableColumnModel of the table. |
protected TableModel |
dataModel
The TableModel of the table. |
protected java.util.Hashtable |
defaultEditorsByColumnClass
A table of objects that display and edit the contents of a cell, indexed by class as declared in getColumnClass
in the TableModel interface. |
protected java.util.Hashtable |
defaultRenderersByColumnClass
A table of objects that display the contents of a cell, indexed by class as declared in getColumnClass
in the TableModel interface. |
protected int |
editingColumn
Identifies the column of the cell being edited. |
protected int |
editingRow
Identifies the row of the cell being edited. |
protected java.awt.Component |
editorComp
If editing, the Component that is handling the editing. |
protected Color |
gridColor
The color of the grid. |
protected Dimension |
preferredViewportSize
Used by the Scrollable interface to determine the initial visible area. |
protected int |
rowHeight
The height in pixels of each row in the table. |
protected int |
rowMargin
The height in pixels of the margin between the cells in each row. |
protected boolean |
rowSelectionAllowed
True if row selection is allowed in this table. |
protected Color |
selectionBackground
The background color of selected cells. |
protected Color |
selectionForeground
The foreground color of selected cells. |
protected ListSelectionModel |
selectionModel
The ListSelectionModel of the table, used to keep track of row selections. |
protected boolean |
showHorizontalLines
The table draws horizontal lines between cells if showHorizontalLines is true. |
protected boolean |
showVerticalLines
The table draws vertical lines between cells if showVerticalLines is true. |
protected JTableHeader |
tableHeader
The TableHeader working with the table. |
Fields inherited from class javax.swing.JComponent |
listenerList, TOOL_TIP_TEXT_KEY, UNDEFINED_CONDITION, WHEN_ANCESTOR_OF_FOCUSED_COMPONENT, WHEN_FOCUSED, WHEN_IN_FOCUSED_WINDOW |
Fields inherited from class java.awt.Component |
BOTTOM_ALIGNMENT, CENTER_ALIGNMENT, LEFT_ALIGNMENT, RIGHT_ALIGNMENT, TOP_ALIGNMENT |
Fields inherited from interface java.awt.image.ImageObserver |
ABORT, ALLBITS, ERROR, FRAMEBITS, HEIGHT, PROPERTIES, SOMEBITS, WIDTH |
Constructor Summary | |
JTable()
Constructs a default JTable that is initialized with a default
data model, a default column model, and a default selection
model. |
|
JTable(int numRows,
int numColumns)
Constructs a JTable with numRows
and numColumns of empty cells using
DefaultTableModel . |
|
JTable(java.lang.Object[][] rowData,
java.lang.Object[] columnNames)
Constructs a JTable to display the values in the two dimensional array,
rowData , with column names, columnNames . |
|
JTable(TableModel dm)
Constructs a JTable that is initialized with
dm as the data model, a default column model,
and a default selection model. |
|
JTable(TableModel dm,
TableColumnModel cm)
Constructs a JTable that is initialized with
dm as the data model, cm
as the column model, and a default selection model. |
|
JTable(TableModel dm,
TableColumnModel cm,
ListSelectionModel sm)
Constructs a JTable that is initialized with
dm as the data model, cm as the
column model, and sm as the selection model. |
|
JTable(java.util.Vector rowData,
java.util.Vector columnNames)
Constructs a JTable to display the values in the
Vector of Vectors , rowData ,
with column names, columnNames . |
Method Summary | |
void |
addColumn(TableColumn aColumn)
Appends aColumn to the end of the array of columns held by
this JTable 's column model. |
void |
addColumnSelectionInterval(int index0,
int index1)
Adds the columns from index0 to index1 ,
inclusive, to the current selection. |
void |
addNotify()
Calls the configureEnclosingScrollPane method. |
void |
addRowSelectionInterval(int index0,
int index1)
Adds the rows from index0 to index1 , inclusive, to
the current selection. |
void |
changeSelection(int rowIndex,
int columnIndex,
boolean toggle,
boolean extend)
Updates the selection models of the table, depending on the state of the two flags: toggle and extend . |
void |
clearSelection()
Deselects all selected columns and rows. |
void |
columnAdded(TableColumnModelEvent e)
Invoked when a column is added to the table column model. |
int |
columnAtPoint(Point point)
Returns the index of the column that point lies in,
or -1 if the result is not in the range
[0, getColumnCount() -1]. |
void |
columnMarginChanged(ChangeEvent e)
Invoked when a column is moved due to a margin change. |
void |
columnMoved(TableColumnModelEvent e)
Invoked when a column is repositioned. |
void |
columnRemoved(TableColumnModelEvent e)
Invoked when a column is removed from the table column model. |
void |
columnSelectionChanged(ListSelectionEvent e)
Invoked when the selection model of the TableColumnModel
is changed. |
protected void |
configureEnclosingScrollPane()
If this JTable is the viewportView of an enclosing JScrollPane
(the usual situation), configure this ScrollPane by, amongst other things,
installing the table's tableHeader as the columnHeaderView of the scroll pane. |
int |
convertColumnIndexToModel(int viewColumnIndex)
Maps the index of the column in the view at viewColumnIndex to the index of the column
in the table model. |
int |
convertColumnIndexToView(int modelColumnIndex)
Maps the index of the column in the table model at modelColumnIndex to the index of the column
in the view. |
protected TableColumnModel |
createDefaultColumnModel()
Returns the default column model object, which is a DefaultTableColumnModel . |
void |
createDefaultColumnsFromModel()
Creates default columns for the table from the data model using the getColumnCount method
defined in the TableModel interface. |
protected TableModel |
createDefaultDataModel()
Returns the default table model object, which is a DefaultTableModel . |
protected void |
createDefaultEditors()
Creates default cell editors for objects, numbers, and boolean values. |
protected void |
createDefaultRenderers()
Creates default cell renderers for objects, numbers, doubles, dates, booleans, and icons. |
protected ListSelectionModel |
createDefaultSelectionModel()
Returns the default selection model object, which is a DefaultListSelectionModel . |
protected JTableHeader |
createDefaultTableHeader()
Returns the default table header object, which is a JTableHeader . |
void |
doLayout()
Causes this table to lay out its rows and columns. |
boolean |
editCellAt(int row,
int column)
Programmatically starts editing the cell at row and
column , if the cell is editable. |
boolean |
editCellAt(int row,
int column,
java.util.EventObject e)
Programmatically starts editing the cell at row and
column , if the cell is editable. |
boolean |
getAutoCreateColumnsFromModel()
Determines whether the table will create default columns from the model. |
int |
getAutoResizeMode()
Returns the auto resize mode of the table. |
Rectangle |
getCellRect(int row,
int column,
boolean includeSpacing)
Returns a rectangle for the cell that lies at the intersection of row and column . |
TableCellRenderer |
getCellRenderer(int row,
int column)
Returns an appropriate renderer for the cell specified by this row and column. |
boolean |
getCellSelectionEnabled()
Returns true if both row and column selection models are enabled. |
TableColumn |
getColumn(java.lang.Object identifier)
Returns the TableColumn object for the column in the table
whose identifier is equal to identifier , when compared using
equals . |
java.lang.Class |
getColumnClass(int column)
Returns the type of the column appearing in the view at column position column . |
int |
getColumnCount()
Returns the number of columns in the column model. |
TableColumnModel |
getColumnModel()
Returns the TableColumnModel that contains all column information
of this table. |
java.lang.String |
getColumnName(int column)
Returns the name of the column appearing in the view at column position column . |
boolean |
getColumnSelectionAllowed()
Returns true if columns can be selected. |
TableCellRenderer |
getDefaultRenderer(java.lang.Class columnClass)
Returns the cell renderer to be used when no renderer has been set in a TableColumn . |
int |
getEditingColumn()
Returns the index of the column that contains the cell currently being edited. |
int |
getEditingRow()
Returns the index of the row that contains the cell currently being edited. |
java.awt.Component |
getEditorComponent()
Returns the component that is handling the editing session. |
Color |
getGridColor()
Returns the color used to draw grid lines. |
Dimension |
getIntercellSpacing()
Returns the horizontal and vertical space between cells. |
TableModel |
getModel()
Returns the TableModel that provides the data displayed by this
JTable . |
Dimension |
getPreferredScrollableViewportSize()
Returns the preferred size of the viewport for this table. |
int |
getRowCount()
Returns the number of rows in this table's model. |
int |
getRowHeight()
Returns the height of a table row, in pixels. |
int |
getRowHeight(int row)
Returns the height, in pixels, of the cells in row . |
int |
getRowMargin()
Gets the amount of empty space, in pixels, between cells. |
boolean |
getRowSelectionAllowed()
Returns true if rows can be selected. |
int |
getScrollableBlockIncrement(Rectangle visibleRect,
int orientation,
int direction)
Returns visibleRect.height or
visibleRect.width ,
depending on this table's orientation. |
boolean |
getScrollableTracksViewportHeight()
Returns false to indicate that the height of the viewport does not determine the height of the table. |
boolean |
getScrollableTracksViewportWidth()
Returns false if autoResizeMode is set to
AUTO_RESIZE_OFF , which indicates that the
width of the viewport does not determine the width
of the table. |
int |
getScrollableUnitIncrement(Rectangle visibleRect,
int orientation,
int direction)
Returns the scroll increment (in pixels) that completely exposes one new row or column (depending on the orientation). |
int |
getSelectedColumn()
Returns the index of the first selected column, -1 if no column is selected. |
int |
getSelectedColumnCount()
Returns the number of selected columns. |
int[] |
getSelectedColumns()
Returns the indices of all selected columns. |
int |
getSelectedRow()
Returns the index of the first selected row, -1 if no row is selected. |
int |
getSelectedRowCount()
Returns the number of selected rows. |
int[] |
getSelectedRows()
Returns the indices of all selected rows. |
Color |
getSelectionBackground()
Returns the background color for selected cells. |
Color |
getSelectionForeground()
Returns the foreground color for selected cells. |
ListSelectionModel |
getSelectionModel()
Returns the ListSelectionModel that is used to maintain row
selection state. |
boolean |
getShowHorizontalLines()
Returns true if the table draws horizontal lines between cells, false if it doesn't. |
boolean |
getShowVerticalLines()
Returns true if the table draws vertical lines between cells, false if it doesn't. |
boolean |
getSurrendersFocusOnKeystroke()
Returns true if the editor should get the focus when keystrokes cause the editor to be activated |
JTableHeader |
getTableHeader()
Returns the tableHeader used by this JTable . |
java.lang.Object |
getValueAt(int row,
int column)
Returns the cell value at row and column . |
protected void |
initializeLocalVars()
Initializes table properties to their default values. |
boolean |
isCellEditable(int row,
int column)
Returns true if the cell at row and column
is editable. |
boolean |
isCellSelected(int row,
int column)
Returns true if the cell at the specified position is selected. |
boolean |
isColumnSelected(int column)
Returns true if the column at the specified index is selected. |
boolean |
isEditing()
Returns true if a cell is being edited. |
boolean |
isRowSelected(int row)
Returns true if the row at the specified index is selected. |
void |
moveColumn(int column,
int targetColumn)
Moves the column column to the position currently
occupied by the column targetColumn in the view. |
void |
paint(java.awt.Graphics g)
Invoked by Swing to draw components. |
protected void |
paintBorder(java.awt.Graphics g)
Paints the component's border. |
protected void |
paintComponent(java.awt.Graphics g)
Calls the UI delegate's paint method, if the UI delegate is non- null . |
void |
paintComponents(java.awt.Graphics g)
|
protected java.lang.String |
paramString()
Returns a string representation of this table. |
java.awt.Component |
prepareRenderer(TableCellRenderer renderer,
int row,
int column)
Prepares the renderer by querying the data model for the value and selection state of the cell at row , column . |
protected void |
printBorder(java.awt.Graphics g)
Prints the component's border. |
protected void |
printComponent(java.awt.Graphics g)
This is invoked during a printing operation. |
void |
printComponents(java.awt.Graphics g)
|
protected boolean |
processKeyBinding(KeyStroke ks,
java.awt.event.KeyEvent e,
int condition,
boolean pressed)
Invoked to process the key bindings for ks as the result
of the KeyEvent e . |
void |
removeColumn(TableColumn aColumn)
Removes aColumn from this JTable 's
array of columns. |
void |
removeColumnSelectionInterval(int index0,
int index1)
Deselects the columns from index0 to index1 , inclusive. |
void |
removeEditor()
Discards the editor object and frees the real estate it used for cell rendering. |
void |
removeNotify()
Calls the unconfigureEnclosingScrollPane method. |
void |
removeRowSelectionInterval(int index0,
int index1)
Deselects the rows from index0 to index1 , inclusive. |
protected void |
resizeAndRepaint()
Equivalent to revalidate followed by repaint . |
int |
rowAtPoint(Point point)
Returns the index of the row that point lies in,
or -1 if the result is not in the range
[0, getRowCount() -1]. |
void |
selectAll()
Selects all rows, columns, and cells in the table. |
void |
setAutoCreateColumnsFromModel(boolean autoCreateColumnsFromModel)
Sets this table's autoCreateColumnsFromModel flag. |
void |
setAutoResizeMode(int mode)
Sets the table's auto resize mode when the table is resized. |
void |
setCellSelectionEnabled(boolean cellSelectionEnabled)
Sets whether this table allows both a column selection and a row selection to exist simultaneously. |
void |
setColumnModel(TableColumnModel columnModel)
Sets the column model for this table to newModel and registers
for listener notifications from the new column model. |
void |
setColumnSelectionAllowed(boolean columnSelectionAllowed)
Sets whether the columns in this model can be selected. |
void |
setColumnSelectionInterval(int index0,
int index1)
Selects the columns from index0 to index1 ,
inclusive. |
void |
setDefaultRenderer(java.lang.Class columnClass,
TableCellRenderer renderer)
Sets a default cell renderer to be used if no renderer has been set in a TableColumn . |
void |
setEditingColumn(int aColumn)
Sets the editingColumn variable. |
void |
setEditingRow(int aRow)
Sets the editingRow variable. |
void |
setGridColor(Color gridColor)
Sets the color used to draw grid lines to gridColor and redisplays. |
void |
setIntercellSpacing(Dimension intercellSpacing)
Sets the rowMargin and the columnMargin --
the height and width of the space between cells -- to
intercellSpacing . |
void |
setModel(TableModel dataModel)
Sets the data model for this table to newModel and registers
with it for listener notifications from the new data model. |
void |
setPreferredScrollableViewportSize(Dimension size)
Sets the preferred size of the viewport for this table. |
void |
setRowHeight(int rowHeight)
Sets the height, in pixels, of all cells to rowHeight ,
revalidates, and repaints. |
void |
setRowHeight(int row,
int rowHeight)
Sets the height for row to rowHeight ,
revalidates, and repaints. |
void |
setRowMargin(int rowMargin)
Sets the amount of empty space between cells in adjacent rows. |
void |
setRowSelectionAllowed(boolean rowSelectionAllowed)
Sets whether the rows in this model can be selected. |
void |
setRowSelectionInterval(int index0,
int index1)
Selects the rows from index0 to index1 ,
inclusive. |
void |
setSelectionBackground(Color selectionBackground)
Sets the background color for selected cells. |
void |
setSelectionForeground(Color selectionForeground)
Sets the foreground color for selected cells. |
void |
setSelectionMode(int selectionMode)
Sets the table's selection mode to allow only single selections, a single contiguous interval, or multiple intervals. |
void |
setSelectionModel(ListSelectionModel newModel)
Sets the row selection model for this table to newModel
and registers for listener notifications from the new selection model. |
void |
setShowGrid(boolean showGrid)
Sets whether the table draws grid lines around cells. |
void |
setShowHorizontalLines(boolean showHorizontalLines)
Sets whether the table draws horizontal lines between cells. |
void |
setShowVerticalLines(boolean showVerticalLines)
Sets whether the table draws vertical lines between cells. |
void |
setSurrendersFocusOnKeystroke(boolean surrendersFocusOnKeystroke)
Sets whether editors in this JTable get the keyboard focus when an editor is activated as a result of the JTable forwarding keyboard events for a cell. |
void |
setTableHeader(JTableHeader tableHeader)
Sets the tableHeader working with this JTable to newHeader . |
void |
setValueAt(java.lang.Object aValue,
int row,
int column)
Sets the value for the cell in the table model at row
and column . |
void |
tableChanged(TableModelEvent e)
Invoked when this table's TableModel generates
a TableModelEvent . |
protected void |
unconfigureEnclosingScrollPane()
Reverses the effect of configureEnclosingScrollPane
by replacing the columnHeaderView of the enclosing
scroll pane with null . |
void |
valueChanged(ListSelectionEvent e)
Invoked when the row selection changes -- repaints to show the new selection. |
Methods inherited from class java.awt.Container |
add, add, add, add, add, addContainerListener, addImpl, areFocusTraversalKeysSet, findComponentAt, findComponentAt, getComponent, getComponentAt, getComponentAt, getComponentCount, getComponents, getContainerListeners, getFocusTraversalKeys, getFocusTraversalPolicy, getLayout, invalidate, isAncestorOf, isFocusCycleRoot, isFocusCycleRoot, isFocusTraversalPolicySet, list, list, processContainerEvent, processEvent, remove, remove, removeAll, removeContainerListener, setFocusCycleRoot, setFocusTraversalKeys, setFocusTraversalPolicy, setLayout, transferFocusBackward, transferFocusDownCycle, validate, validateTree |
Methods inherited from class java.awt.Component |
addComponentListener, addFocusListener, addInputMethodListener, addKeyListener, addMouseListener, addMouseMotionListener, addMouseWheelListener, checkImage, checkImage, coalesceEvents, contains, createImage, createImage, createVolatileImage, createVolatileImage, disableEvents, dispatchEvent, enableEvents, enableInputMethods, getBackground, getBounds, getColorModel, getComponentListeners, getCursor, getFocusCycleRootAncestor, getFocusListeners, getFocusTraversalKeysEnabled, getFont, getFontMetrics, getForeground, getGraphicsConfiguration, getIgnoreRepaint, getInputContext, getInputMethodListeners, getInputMethodRequests, getKeyListeners, getLocale, getLocation, getLocationOnScreen, getMouseListeners, getMouseMotionListeners, getMouseWheelListeners, getName, getParent, getSize, getToolkit, getTreeLock, hasFocus, imageUpdate, isBackgroundSet, isCursorSet, isDisplayable, isEnabled, isFocusable, isFocusOwner, isFocusTraversable, isFontSet, isForegroundSet, isLightweight, isShowing, isValid, isVisible, list, list, list, paintAll, prepareImage, prepareImage, processComponentEvent, processFocusEvent, processInputMethodEvent, processMouseEvent, processMouseWheelEvent, removeComponentListener, removeFocusListener, removeInputMethodListener, removeKeyListener, removeMouseListener, removeMouseMotionListener, removeMouseWheelListener, repaint, repaint, repaint, setBounds, setBounds, setCursor, setFocusable, setFocusTraversalKeysEnabled, setIgnoreRepaint, setLocale, setLocation, setLocation, setName, setSize, setSize, toString, transferFocus, transferFocusUpCycle |
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait |
Field Detail |
public static final int AUTO_RESIZE_OFF
public static final int AUTO_RESIZE_NEXT_COLUMN
public static final int AUTO_RESIZE_SUBSEQUENT_COLUMNS
public static final int AUTO_RESIZE_LAST_COLUMN
public static final int AUTO_RESIZE_ALL_COLUMNS
protected TableModel dataModel
TableModel
of the table.
protected TableColumnModel columnModel
TableColumnModel
of the table.
protected ListSelectionModel selectionModel
ListSelectionModel
of the table, used to keep track of row selections.
protected JTableHeader tableHeader
TableHeader
working with the table.
protected int rowHeight
protected int rowMargin
protected Color gridColor
protected boolean showHorizontalLines
showHorizontalLines
is true.
protected boolean showVerticalLines
showVerticalLines
is true.
protected int autoResizeMode
protected boolean autoCreateColumnsFromModel
TableModel
to build the default
set of columns if this is true.
protected Dimension preferredViewportSize
Scrollable
interface to determine the initial visible area.
protected boolean rowSelectionAllowed
protected transient java.awt.Component editorComp
Component
that is handling the editing.
protected transient int editingColumn
protected transient int editingRow
protected transient java.util.Hashtable defaultRenderersByColumnClass
getColumnClass
in the TableModel
interface.
protected transient java.util.Hashtable defaultEditorsByColumnClass
getColumnClass
in the TableModel
interface.
protected Color selectionForeground
protected Color selectionBackground
Constructor Detail |
public JTable()
JTable
that is initialized with a default
data model, a default column model, and a default selection
model.
createDefaultDataModel()
,
createDefaultColumnModel()
,
createDefaultSelectionModel()
public JTable(TableModel dm)
JTable
that is initialized with
dm
as the data model, a default column model,
and a default selection model.
dm
- the data model for the tablecreateDefaultColumnModel()
,
createDefaultSelectionModel()
public JTable(TableModel dm, TableColumnModel cm)
JTable
that is initialized with
dm
as the data model, cm
as the column model, and a default selection model.
dm
- the data model for the tablecm
- the column model for the tablecreateDefaultSelectionModel()
public JTable(TableModel dm, TableColumnModel cm, ListSelectionModel sm)
JTable
that is initialized with
dm
as the data model, cm
as the
column model, and sm
as the selection model.
If any of the parameters are null
this method
will initialize the table with the corresponding default model.
The autoCreateColumnsFromModel
flag is set to false
if cm
is non-null, otherwise it is set to true
and the column model is populated with suitable
TableColumns
for the columns in dm
.
dm
- the data model for the tablecm
- the column model for the tablesm
- the row selection model for the tablecreateDefaultDataModel()
,
createDefaultColumnModel()
,
createDefaultSelectionModel()
public JTable(int numRows, int numColumns)
JTable
with numRows
and numColumns
of empty cells using
DefaultTableModel
. The columns will have
names of the form "A", "B", "C", etc.
numRows
- the number of rows the table holdsnumColumns
- the number of columns the table holdsDefaultTableModel
public JTable(java.util.Vector rowData, java.util.Vector columnNames)
JTable
to display the values in the
Vector
of Vectors
, rowData
,
with column names, columnNames
. The
Vectors
contained in rowData
should contain the values for that row. In other words,
the value of the cell at row 1, column 5 can be obtained
with the following code:
((Vector)rowData.elementAt(1)).elementAt(5);
rowData
- the data for the new tablecolumnNames
- names of each columnpublic JTable(java.lang.Object[][] rowData, java.lang.Object[] columnNames)
JTable
to display the values in the two dimensional array,
rowData
, with column names, columnNames
.
rowData
is an array of rows, so the value of the cell at row 1,
column 5 can be obtained with the following code:
rowData[1][5];
All rows must be of the same length as columnNames
.
rowData
- the data for the new tablecolumnNames
- names of each columnMethod Detail |
public void addNotify()
configureEnclosingScrollPane
method.
addNotify
in class JComponent
configureEnclosingScrollPane()
protected void configureEnclosingScrollPane()
JTable
is the viewportView
of an enclosing JScrollPane
(the usual situation), configure this ScrollPane
by, amongst other things,
installing the table's tableHeader
as the columnHeaderView
of the scroll pane.
When a JTable
is added to a JScrollPane
in the usual way,
using new JScrollPane(myTable)
, addNotify
is
called in the JTable
(when the table is added to the viewport).
JTable
's addNotify
method in turn calls this method,
which is protected so that this default installation procedure can
be overridden by a subclass.
addNotify()
public void removeNotify()
unconfigureEnclosingScrollPane
method.
removeNotify
in class JComponent
unconfigureEnclosingScrollPane()
protected void unconfigureEnclosingScrollPane()
configureEnclosingScrollPane
by replacing the columnHeaderView
of the enclosing
scroll pane with null
. JTable
's
removeNotify
method calls
this method, which is protected so that this default uninstallation
procedure can be overridden by a subclass.
removeNotify()
,
configureEnclosingScrollPane()
public void setTableHeader(JTableHeader tableHeader)
tableHeader
working with this JTable
to newHeader
.
It is legal to have a null
tableHeader
.
tableHeader
- new tableHeadergetTableHeader()
public JTableHeader getTableHeader()
tableHeader
used by this JTable
.
tableHeader
used by this tablesetTableHeader(javax.swing.table.JTableHeader)
public void setRowHeight(int rowHeight)
rowHeight
,
revalidates, and repaints.
The height of the cells will be equal to the row height minus
the row margin.
rowHeight
- new row height
java.lang.IllegalArgumentException
- if rowHeight
is
less than 1getRowHeight()
public int getRowHeight()
setRowHeight(int)
public void setRowHeight(int row, int rowHeight)
row
to rowHeight
,
revalidates, and repaints. The height of the cells in this row
will be equal to the row height minus the row margin.
row
- the row whose height is being
changedrowHeight
- new row height, in pixels
java.lang.IllegalArgumentException
- if rowHeight
is
less than 1public int getRowHeight(int row)
row
.
row
- the row whose height is to be returned
public void setRowMargin(int rowMargin)
rowMargin
- the number of pixels between cells in a rowgetRowMargin()
public int getRowMargin()
getIntercellSpacing().height
.
setRowMargin(int)
public void setIntercellSpacing(Dimension intercellSpacing)
rowMargin
and the columnMargin
--
the height and width of the space between cells -- to
intercellSpacing
.
intercellSpacing
- a Dimension
specifying the new width
and height between cellsgetIntercellSpacing()
public Dimension getIntercellSpacing()
setIntercellSpacing(java.awt.Dimension)
public void setGridColor(Color gridColor)
gridColor
and redisplays.
The default color is look and feel dependent.
gridColor
- the new color of the grid lines
java.lang.IllegalArgumentException
- if gridColor
is null
getGridColor()
public Color getGridColor()
setGridColor(java.awt.Color)
public void setShowGrid(boolean showGrid)
showGrid
is true it does; if it is false it doesn't.
There is no getShowGrid
method as this state is held
in two variables -- showHorizontalLines
and showVerticalLines
--
each of which can be queried independently.
showGrid
- true if table view should draw grid linessetShowVerticalLines(boolean)
,
setShowHorizontalLines(boolean)
public void setShowHorizontalLines(boolean showHorizontalLines)
showHorizontalLines
is true it does; if it is false it doesn't.
showHorizontalLines
- true if table view should draw horizontal linesgetShowHorizontalLines()
,
setShowGrid(boolean)
,
setShowVerticalLines(boolean)
public void setShowVerticalLines(boolean showVerticalLines)
showVerticalLines
is true it does; if it is false it doesn't.
showVerticalLines
- true if table view should draw vertical linesgetShowVerticalLines()
,
setShowGrid(boolean)
,
setShowHorizontalLines(boolean)
public boolean getShowHorizontalLines()
setShowHorizontalLines(boolean)
public boolean getShowVerticalLines()
setShowVerticalLines(boolean)
public void setAutoResizeMode(int mode)
mode
- One of 5 legal values:
AUTO_RESIZE_OFF,
AUTO_RESIZE_NEXT_COLUMN,
AUTO_RESIZE_SUBSEQUENT_COLUMNS,
AUTO_RESIZE_LAST_COLUMN,
AUTO_RESIZE_ALL_COLUMNSgetAutoResizeMode()
,
doLayout()
public int getAutoResizeMode()
setAutoResizeMode(int)
,
doLayout()
public void setAutoCreateColumnsFromModel(boolean autoCreateColumnsFromModel)
autoCreateColumnsFromModel
flag.
This method calls createDefaultColumnsFromModel
if
autoCreateColumnsFromModel
changes from false to true.
autoCreateColumnsFromModel
- true if JTable
should automatically create columnsgetAutoCreateColumnsFromModel()
,
createDefaultColumnsFromModel()
public boolean getAutoCreateColumnsFromModel()
setModel
will clear any existing columns and
create new columns from the new model. Also, if the event in
the tableChanged
notification specifies that the
entire table changed, then the columns will be rebuilt.
The default is true.
setAutoCreateColumnsFromModel(boolean)
,
createDefaultColumnsFromModel()
public void createDefaultColumnsFromModel()
getColumnCount
method
defined in the TableModel
interface.
Clears any existing columns before creating the new columns based on information from the model.
getAutoCreateColumnsFromModel()
public void setDefaultRenderer(java.lang.Class columnClass, TableCellRenderer renderer)
TableColumn
. If renderer is null
,
removes the default renderer for this column class.
columnClass
- set the default cell renderer for this columnClassrenderer
- default cell renderer to be used for this
columnClassgetDefaultRenderer(java.lang.Class)
,
#setDefaultEditor
public TableCellRenderer getDefaultRenderer(java.lang.Class columnClass)
TableColumn
. During the rendering of cells the renderer is fetched from
a Hashtable
of entries according to the class of the cells in the column. If
there is no entry for this columnClass
the method returns
the entry for the most specific superclass. The JTable
installs entries
for Object
, Number
, and Boolean
, all of which can be modified
or replaced.
columnClass
- return the default cell renderer
for this columnClass
setDefaultRenderer(java.lang.Class, javax.swing.table.TableCellRenderer)
,
getColumnClass(int)
public void setSelectionMode(int selectionMode)
JTable
provides all the methods for handling
column and row selection. When setting states,
such as setSelectionMode
, it not only
updates the mode for the row selection model but also sets similar
values in the selection model of the columnModel
.
If you want to have the row and column selection models operating
in different modes, set them both directly.
Both the row and column selection models for JTable
default to using a DefaultListSelectionModel
so that JTable
works the same way as the
JList
. See the setSelectionMode
method
in JList
for details about the modes.
JList.setSelectionMode(int)
public void setRowSelectionAllowed(boolean rowSelectionAllowed)
rowSelectionAllowed
- true if this model will allow row selectiongetRowSelectionAllowed()
public boolean getRowSelectionAllowed()
setRowSelectionAllowed(boolean)
public void setColumnSelectionAllowed(boolean columnSelectionAllowed)
columnSelectionAllowed
- true if this model will allow column selectiongetColumnSelectionAllowed()
public boolean getColumnSelectionAllowed()
setColumnSelectionAllowed(boolean)
public void setCellSelectionEnabled(boolean cellSelectionEnabled)
isCellSelected
to
change this default behavior. This method is equivalent to setting
both the rowSelectionAllowed
property and
columnSelectionAllowed
property of the
columnModel
to the supplied value.
cellSelectionEnabled
- true if simultaneous row and column
selection is allowedgetCellSelectionEnabled()
,
isCellSelected(int, int)
public boolean getCellSelectionEnabled()
getRowSelectionAllowed() &&
getColumnSelectionAllowed()
.
setCellSelectionEnabled(boolean)
public void selectAll()
public void clearSelection()
public void setRowSelectionInterval(int index0, int index1)
index0
to index1
,
inclusive.
index0
- one end of the intervalindex1
- the other end of the interval
java.lang.IllegalArgumentException
- if index0
or
index1
lie outside
[0, getRowCount()
-1]public void setColumnSelectionInterval(int index0, int index1)
index0
to index1
,
inclusive.
index0
- one end of the intervalindex1
- the other end of the interval
java.lang.IllegalArgumentException
- if index0
or
index1
lie outside
[0, getColumnCount()
-1]public void addRowSelectionInterval(int index0, int index1)
index0
to index1
, inclusive, to
the current selection.
index0
- one end of the intervalindex1
- the other end of the interval
java.lang.IllegalArgumentException
- if index0
or index1
lie outside [0, getRowCount()
-1]public void addColumnSelectionInterval(int index0, int index1)
index0
to index1
,
inclusive, to the current selection.
index0
- one end of the intervalindex1
- the other end of the interval
java.lang.IllegalArgumentException
- if index0
or
index1
lie outside
[0, getColumnCount()
-1]public void removeRowSelectionInterval(int index0, int index1)
index0
to index1
, inclusive.
index0
- one end of the intervalindex1
- the other end of the interval
java.lang.IllegalArgumentException
- if index0
or
index1
lie outside
[0, getRowCount()
-1]public void removeColumnSelectionInterval(int index0, int index1)
index0
to index1
, inclusive.
index0
- one end of the intervalindex1
- the other end of the interval
java.lang.IllegalArgumentException
- if index0
or
index1
lie outside
[0, getColumnCount()
-1]public int getSelectedRow()
public int getSelectedColumn()
public int[] getSelectedRows()
getSelectedRow()
public int[] getSelectedColumns()
getSelectedColumn()
public int getSelectedRowCount()
public int getSelectedColumnCount()
public boolean isRowSelected(int row)
row
is selected, where 0 is the
first row
java.lang.IllegalArgumentException
- if row
is not in the
valid rangepublic boolean isColumnSelected(int column)
column
- the column in the column model
column
is selected, where
0 is the first column
java.lang.IllegalArgumentException
- if column
is not in the
valid rangepublic boolean isCellSelected(int row, int column)
row
- the row being queriedcolumn
- the column being queried
(row, column)
is selected,
where the first row and first column are at index 0
java.lang.IllegalArgumentException
- if row
or column
are not in the valid rangepublic void changeSelection(int rowIndex, int columnIndex, boolean toggle, boolean extend)
toggle
and extend
. All changes
to the selection that are the result of keyboard or mouse events received
by the UI are channeled through this method so that the behavior may be
overridden by a subclass.
This implementation uses the following conventions:
toggle
: false, extend
: false.
Clear the previous selection and ensure the new cell is selected.
toggle
: false, extend
: true.
Extend the previous selection to include the specified cell.
toggle
: true, extend
: false.
If the specified cell is selected, deselect it. If it is not selected, select it.
toggle
: true, extend
: true.
Leave the selection state as it is, but move the anchor index to the specified location.
rowIndex
- affects the selection at row
columnIndex
- affects the selection at column
toggle
- see description aboveextend
- if true, extend the current selectionpublic Color getSelectionForeground()
Color
object for the foreground propertysetSelectionForeground(java.awt.Color)
,
setSelectionBackground(java.awt.Color)
public void setSelectionForeground(Color selectionForeground)
The default value of this property is defined by the look and feel implementation.
This is a JavaBeans bound property.
selectionForeground
- the Color
to use in the foreground
for selected list itemsgetSelectionForeground()
,
setSelectionBackground(java.awt.Color)
,
JComponent.setForeground(java.awt.Color)
,
JComponent.setBackground(java.awt.Color)
,
JComponent.setFont(java.awt.Font)
public Color getSelectionBackground()
Color
used for the background of selected list itemssetSelectionBackground(java.awt.Color)
,
setSelectionForeground(java.awt.Color)
public void setSelectionBackground(Color selectionBackground)
The default value of this property is defined by the look and feel implementation.
This is a JavaBeans bound property.
selectionBackground
- the Color
to use for the background
of selected cellsgetSelectionBackground()
,
setSelectionForeground(java.awt.Color)
,
JComponent.setForeground(java.awt.Color)
,
JComponent.setBackground(java.awt.Color)
,
JComponent.setFont(java.awt.Font)
public TableColumn getColumn(java.lang.Object identifier)
TableColumn
object for the column in the table
whose identifier is equal to identifier
, when compared using
equals
.
identifier
- the identifier object
TableColumn
object that matches the identifier
java.lang.IllegalArgumentException
- if identifier
is null
or no TableColumn
has this identifierpublic int convertColumnIndexToModel(int viewColumnIndex)
viewColumnIndex
to the index of the column
in the table model. Returns the index of the corresponding
column in the model. If viewColumnIndex
is less than zero, returns viewColumnIndex
.
viewColumnIndex
- the index of the column in the view
convertColumnIndexToView(int)
public int convertColumnIndexToView(int modelColumnIndex)
modelColumnIndex
to the index of the column
in the view. Returns the index of the
corresponding column in the view; returns -1 if this column is not
being displayed. If modelColumnIndex
is less than zero,
returns modelColumnIndex
.
modelColumnIndex
- the index of the column in the model
convertColumnIndexToModel(int)
public int getRowCount()
getColumnCount()
public int getColumnCount()
getRowCount()
,
removeColumn(javax.swing.table.TableColumn)
public java.lang.String getColumnName(int column)
column
.
column
- the column in the view being queried
column
in the view where the first column is column 0public java.lang.Class getColumnClass(int column)
column
.
column
- the column in the view being queried
column
in the view where the first column is column 0public java.lang.Object getValueAt(int row, int column)
row
and column
.
Note: The column is specified in the table view's display
order, and not in the TableModel
's column
order. This is an important distinction because as the
user rearranges the columns in the table,
the column at a given index in the view will change.
Meanwhile the user's actions never affect the model's
column ordering.
row
- the row whose value is to be queriedcolumn
- the column whose value is to be queried
public void setValueAt(java.lang.Object aValue, int row, int column)
row
and column
.
Note: The column is specified in the table view's display
order, and not in the TableModel
's column
order. This is an important distinction because as the
user rearranges the columns in the table,
the column at a given index in the view will change.
Meanwhile the user's actions never affect the model's
column ordering.
aValue
is the new value.
aValue
- the new valuerow
- the row of the cell to be changedcolumn
- the column of the cell to be changedgetValueAt(int, int)
public boolean isCellEditable(int row, int column)
row
and column
is editable. Otherwise, invoking setValueAt
on the cell
will have no effect.
Note: The column is specified in the table view's display
order, and not in the TableModel
's column
order. This is an important distinction because as the
user rearranges the columns in the table,
the column at a given index in the view will change.
Meanwhile the user's actions never affect the model's
column ordering.
row
- the row whose value is to be queriedcolumn
- the column whose value is to be queried
setValueAt(java.lang.Object, int, int)
public void addColumn(TableColumn aColumn)
aColumn
to the end of the array of columns held by
this JTable
's column model.
If the column name of aColumn
is null
,
sets the column name of aColumn
to the name
returned by getModel().getColumnName()
.
To add a column to this JTable
to display the
modelColumn
'th column of data in the model with a
given width
, cellRenderer
,
and cellEditor
you can use:
addColumn(new TableColumn(modelColumn, width, cellRenderer, cellEditor));[Any of the
TableColumn
constructors can be used
instead of this one.]
The model column number is stored inside the TableColumn
and is used during rendering and editing to locate the appropriates
data values in the model. The model column number does not change
when columns are reordered in the view.
aColumn
- the TableColumn
to be addedremoveColumn(javax.swing.table.TableColumn)
public void removeColumn(TableColumn aColumn)
aColumn
from this JTable
's
array of columns. Note: this method does not remove the column
of data from the model; it just removes the TableColumn
that was responsible for displaying it.
aColumn
- the TableColumn
to be removedaddColumn(javax.swing.table.TableColumn)
public void moveColumn(int column, int targetColumn)
column
to the position currently
occupied by the column targetColumn
in the view.
The old column at targetColumn
is
shifted left or right to make room.
column
- the index of column to be movedtargetColumn
- the new index of the columnpublic int columnAtPoint(Point point)
point
lies in,
or -1 if the result is not in the range
[0, getColumnCount()
-1].
point
- the location of interest
point
lies in,
or -1 if the result is not in the range
[0, getColumnCount()
-1]rowAtPoint(java.awt.Point)
public int rowAtPoint(Point point)
point
lies in,
or -1 if the result is not in the range
[0, getRowCount()
-1].
point
- the location of interest
point
lies in,
or -1 if the result is not in the range
[0, getRowCount()
-1]columnAtPoint(java.awt.Point)
public Rectangle getCellRect(int row, int column, boolean includeSpacing)
row
and column
.
If includeSpacing
is true then the value returned
has the full height and width of the row and column
specified. If it is false, the returned rectangle is inset by the
intercell spacing to return the true bounds of the rendering or
editing component as it will be set during rendering.
If the column index is valid but the row index is less
than zero the method returns a rectangle with the
y
and height
values set appropriately
and the x
and width
values both set
to zero. In general, when either the row or column indices indicate a
cell outside the appropriate range, the method returns a rectangle
depicting the closest edge of the closest cell that is within
the table's range. When both row and column indices are out
of range the returned rectangle covers the closest
point of the closest cell.
In all cases, calculations that use this method to calculate
results along one axis will not fail because of anomalies in
calculations along the other axis. When the cell is not valid
the includeSpacing
parameter is ignored.
row
- the row index where the desired cell
is locatedcolumn
- the column index where the desired cell
is located in the display; this is not
necessarily the same as the column index
in the data model for the table; the
convertColumnIndexToView(int)
method may be used to convert a data
model column index to a display
column indexincludeSpacing
- if false, return the true cell bounds -
computed by subtracting the intercell
spacing from the height and widths of
the column and row models
row
,column
public void doLayout()
JTable
's
columns is equal to the width of the table.
Before the layout begins the method gets the
resizingColumn
of the tableHeader
.
When the method is called as a result of the resizing of an enclosing window,
the resizingColumn
is null
. This means that resizing
has taken place "outside" the JTable
and the change -
or "delta" - should be distributed to all of the columns regardless
of this JTable
's automatic resize mode.
If the resizingColumn
is not null
, it is one of
the columns in the table that has changed size rather than
the table itself. In this case the auto-resize modes govern
the way the extra (or deficit) space is distributed
amongst the available columns.
The modes are:
Viewport
. If the JTable
is not
enclosed in a JScrollPane
this may
leave parts of the table invisible.
JTable
, including the one that is being
adjusted.
JTable
makes adjustments
to the widths of the columns it respects their minimum and
maximum values absolutely. It is therefore possible that,
even after this method is called, the total width of the columns
is still not equal to the width of the table. When this happens
the JTable
does not put itself
in AUTO_RESIZE_OFF mode to bring up a scroll bar, or break other
commitments of its current auto-resize mode -- instead it
allows its bounds to be set larger (or smaller) than the total of the
column minimum or maximum, meaning, either that there
will not be enough room to display all of the columns, or that the
columns will not fill the JTable
's bounds.
These respectively, result in the clipping of some columns
or an area being painted in the JTable
's
background color during painting.
The mechanism for distributing the delta amongst the available
columns is provided in a private method in the JTable
class:
adjustSizes(long targetSize, final Resizable3 r, boolean inverse)an explanation of which is provided in the following section.
Resizable3
is a private
interface that allows any data structure containing a collection
of elements with a size, preferred size, maximum size and minimum size
to have its elements manipulated by the algorithm.
Call "DELTA" the difference between the target size and the sum of the preferred sizes of the elements in r. The individual sizes are calculated by taking the original preferred sizes and adding a share of the DELTA - that share being based on how far each preferred size is from its limiting bound (minimum or maximum).
Call the individual constraints min[i], max[i], and pref[i].
Call their respective sums: MIN, MAX, and PREF.
Each new size will be calculated using:
size[i] = pref[i] + delta[i]where each individual delta[i] is calculated according to:
If (DELTA < 0) we are in shrink mode where:
DELTA delta[i] = ------------ * (pref[i] - min[i]) (PREF - MIN)If (DELTA > 0) we are in expand mode where:
DELTA delta[i] = ------------ * (max[i] - pref[i]) (MAX - PREF)
The overall effect is that the total size moves that same percentage, k, towards the total minimum or maximum and that percentage guarantees accomodation of the required space, DELTA.
Naive evaluation of the formulae presented here would be subject to
the aggregated rounding errors caused by doing this operation in finite
precision (using ints). To deal with this, the multiplying factor above,
is constantly recalculated and this takes account of the rounding
errors in the previous iterations. The result is an algorithm that
produces a set of integers whose values exactly sum to the supplied
targetSize
, and does so by spreading the rounding
errors evenly over the given elements.
When targetSize
is outside the [MIN, MAX] range,
the algorithm sets all sizes to their appropriate limiting value
(maximum or minimum).
public void setSurrendersFocusOnKeystroke(boolean surrendersFocusOnKeystroke)
surrendersFocusOnKeystroke
- true if the editor should get the focus
when keystrokes cause the editor to be
activatedgetSurrendersFocusOnKeystroke()
public boolean getSurrendersFocusOnKeystroke()
setSurrendersFocusOnKeystroke(boolean)
public boolean editCellAt(int row, int column)
row
and
column
, if the cell is editable. Note that this is
a convenience method for editCellAt(int, int, null)
.
row
- the row to be editedcolumn
- the column to be edited
java.lang.IllegalArgumentException
- if row
or
column
is not in the valid rangepublic boolean editCellAt(int row, int column, java.util.EventObject e)
row
and
column
, if the cell is editable.
To prevent the JTable
from editing a particular table,
column or cell value, return false from the isCellEditable
method in the TableModel
interface.
row
- the row to be editedcolumn
- the column to be editede
- event to pass into shouldSelectCell
;
note that as of Java 2 platform v1.2, the call to
shouldSelectCell
is no longer made
java.lang.IllegalArgumentException
- if row
or
column
is not in the valid rangepublic boolean isEditing()
editingColumn
,
editingRow
public java.awt.Component getEditorComponent()
public int getEditingColumn()
editingRow
public int getEditingRow()
editingColumn
public final void paint(java.awt.Graphics g)
JComponent
paint
directly,
but should instead use the repaint
method to
schedule the component for redrawing.
This method actually delegates the work of painting to three
protected methods: paintComponent
,
paintBorder
,
and paintChildren
. They're called in the order
listed to ensure that children appear on top of component itself.
Generally speaking, the component and its children should not
paint in the insets area allocated to the border. Subclasses can
just override this method, as always.
paint
in class JComponent
g
- the Graphics
context in which to paintJComponent.paintBorder(java.awt.Graphics)
,
JComponent.paintChildren(java.awt.Graphics)
,
JComponent.getComponentGraphics(java.awt.Graphics)
,
JComponent.repaint(long, int, int, int, int)
public void setModel(TableModel dataModel)
newModel
and registers
with it for listener notifications from the new data model.
dataModel
- the new data source for this table
java.lang.IllegalArgumentException
- if newModel
is null
getModel()
public TableModel getModel()
TableModel
that provides the data displayed by this
JTable
.
TableModel
that provides the data displayed by this JTable
setModel(javax.swing.table.TableModel)
public void setColumnModel(TableColumnModel columnModel)
newModel
and registers
for listener notifications from the new column model. Also sets
the column model of the JTableHeader
to columnModel
.
columnModel
- the new data source for this table
java.lang.IllegalArgumentException
- if columnModel
is null
getColumnModel()
public TableColumnModel getColumnModel()
TableColumnModel
that contains all column information
of this table.
setColumnModel(javax.swing.table.TableColumnModel)
public void setSelectionModel(ListSelectionModel newModel)
newModel
and registers for listener notifications from the new selection model.
newModel
- the new selection model
java.lang.IllegalArgumentException
- if newModel
is null
getSelectionModel()
public ListSelectionModel getSelectionModel()
ListSelectionModel
that is used to maintain row
selection state.
null
if row selection is not allowedsetSelectionModel(javax.swing.ListSelectionModel)
public void tableChanged(TableModelEvent e)
TableModel
generates
a TableModelEvent
.
The TableModelEvent
should be constructed in the
coordinate system of the model; the appropriate mapping to the
view coordinate system is performed by this JTable
when it receives the event.
Application code will not use these methods explicitly, they
are used internally by JTable
.
Note that as of 1.3, this method clears the selection, if any.
tableChanged
in interface TableModelListener
public void columnAdded(TableColumnModelEvent e)
Application code will not use these methods explicitly, they are used internally by JTable.
columnAdded
in interface TableColumnModelListener
TableColumnModelListener
public void columnRemoved(TableColumnModelEvent e)
Application code will not use these methods explicitly, they are used internally by JTable.
columnRemoved
in interface TableColumnModelListener
TableColumnModelListener
public void columnMoved(TableColumnModelEvent e)
Application code will not use these methods explicitly, they are used internally by JTable.
columnMoved
in interface TableColumnModelListener
e
- the event receivedTableColumnModelListener
public void columnMarginChanged(ChangeEvent e)
Application code will not use these methods explicitly, they are used internally by JTable.
columnMarginChanged
in interface TableColumnModelListener
e
- the event receivedTableColumnModelListener
public void columnSelectionChanged(ListSelectionEvent e)
TableColumnModel
is changed.
Application code will not use these methods explicitly, they are used internally by JTable.
columnSelectionChanged
in interface TableColumnModelListener
e
- the event receivedTableColumnModelListener
public void valueChanged(ListSelectionEvent e)
Application code will not use these methods explicitly, they are used internally by JTable.
valueChanged
in interface ListSelectionListener
e
- the event receivedListSelectionListener
public void setPreferredScrollableViewportSize(Dimension size)
size
- a Dimension
object specifying the preferredSize
of a
JViewport
whose view is this tableScrollable.getPreferredScrollableViewportSize()
public Dimension getPreferredScrollableViewportSize()
getPreferredScrollableViewportSize
in interface Scrollable
Dimension
object containing the preferredSize
of the JViewport
which displays this tableScrollable.getPreferredScrollableViewportSize()
public int getScrollableUnitIncrement(Rectangle visibleRect, int orientation, int direction)
This method is called each time the user requests a unit scroll.
getScrollableUnitIncrement
in interface Scrollable
visibleRect
- the view area visible within the viewportorientation
- either SwingConstants.VERTICAL
or SwingConstants.HORIZONTAL
direction
- less than zero to scroll up/left,
greater than zero for down/right
Scrollable.getScrollableUnitIncrement(java.awt.Rectangle, int, int)
public int getScrollableBlockIncrement(Rectangle visibleRect, int orientation, int direction)
visibleRect.height
or
visibleRect.width
,
depending on this table's orientation. Note that as of Swing 1.1.1
(Java 2 v 1.2.2) the value
returned will ensure that the viewport is cleanly aligned on
a row boundary.
getScrollableBlockIncrement
in interface Scrollable
visibleRect
- The view area visible within the viewportorientation
- Either SwingConstants.VERTICAL or SwingConstants.HORIZONTAL.direction
- Less than zero to scroll up/left, greater than zero for down/right.
visibleRect.height
or
visibleRect.width
per the orientationScrollable.getScrollableBlockIncrement(java.awt.Rectangle, int, int)
public boolean getScrollableTracksViewportWidth()
autoResizeMode
is set to
AUTO_RESIZE_OFF
, which indicates that the
width of the viewport does not determine the width
of the table. Otherwise returns true.
getScrollableTracksViewportWidth
in interface Scrollable
autoResizeMode
is set
to AUTO_RESIZE_OFF
, otherwise returns trueScrollable.getScrollableTracksViewportWidth()
public boolean getScrollableTracksViewportHeight()
getScrollableTracksViewportHeight
in interface Scrollable
Scrollable.getScrollableTracksViewportHeight()
protected boolean processKeyBinding(KeyStroke ks, java.awt.event.KeyEvent e, int condition, boolean pressed)
JComponent
ks
as the result
of the KeyEvent
e
. This obtains
the appropriate InputMap
,
gets the binding, gets the action from the ActionMap
,
and then (if the action is found and the component
is enabled) invokes notifyAction
to notify the action.
processKeyBinding
in class JComponent
ks
- the KeyStroke
queriede
- the KeyEvent
condition
- one of the following values:
pressed
- true if the key is pressed
protected void createDefaultRenderers()
javax.swing.table.DefaultTableCellRenderer
protected void createDefaultEditors()
DefaultCellEditor
protected void initializeLocalVars()
protected TableModel createDefaultDataModel()
DefaultTableModel
. A subclass can override this
method to return a different table model object.
DefaultTableModel
protected TableColumnModel createDefaultColumnModel()
DefaultTableColumnModel
. A subclass can override this
method to return a different column model object.
DefaultTableColumnModel
protected ListSelectionModel createDefaultSelectionModel()
DefaultListSelectionModel
. A subclass can override this
method to return a different selection model object.
DefaultListSelectionModel
protected JTableHeader createDefaultTableHeader()
JTableHeader
. A subclass can override this
method to return a different table header object.
JTableHeader
protected void resizeAndRepaint()
revalidate
followed by repaint
.
public void setEditingColumn(int aColumn)
editingColumn
variable.
aColumn
- the column of the cell to be editededitingColumn
public void setEditingRow(int aRow)
editingRow
variable.
aRow
- the row of the cell to be editededitingRow
public TableCellRenderer getCellRenderer(int row, int column)
TableColumn
for this column has a non-null
renderer, returns that. If not, finds the class of the data in
this column (using getColumnClass
)
and returns the default renderer for this type of data.
Note: Throughout the table package, the internal implementations always use this method to provide renderers so that this default behavior can be safely overridden by a subclass.
row
- the row of the cell to render, where 0 is the first rowcolumn
- the column of the cell to render,
where 0 is the first column
null
returns the default renderer
for this type of objectjavax.swing.table.DefaultTableCellRenderer
,
TableColumn.setCellRenderer(javax.swing.table.TableCellRenderer)
,
setDefaultRenderer(java.lang.Class, javax.swing.table.TableCellRenderer)
public java.awt.Component prepareRenderer(TableCellRenderer renderer, int row, int column)
row
, column
.
Returns the component (may be a Component
or a JComponent
) under the event location.
Note: Throughout the table package, the internal implementations always use this method to prepare renderers so that this default behavior can be safely overridden by a subclass.
renderer
- the TableCellRenderer
to preparerow
- the row of the cell to render, where 0 is the first rowcolumn
- the column of the cell to render,
where 0 is the first column
Component
under the event locationpublic void removeEditor()
protected java.lang.String paramString()
null
.
paramString
in class JComponent
protected final void paintComponent(java.awt.Graphics g)
JComponent
null
. We pass the delegate a copy of the
Graphics
object to protect the rest of the
paint code from irrevocable changes
(for example, Graphics.translate
).
paintComponent
in class JComponent
g
- the Graphics
object to protectJComponent.paint(java.awt.Graphics)
,
ComponentUI
protected final void paintBorder(java.awt.Graphics g)
JComponent
paintBorder
in class JComponent
g
- the Graphics
context in which to paintJComponent.paint(java.awt.Graphics)
,
JComponent.setBorder(javax.swing.border.Border)
public final void paintComponents(java.awt.Graphics g)
protected final void printComponent(java.awt.Graphics g)
JComponent
paintComponent
on the component.
printComponent
in class JComponent
g
- the Graphics
context in which to paintJComponent.print(java.awt.Graphics)
protected final void printBorder(java.awt.Graphics g)
JComponent
paintBorder
on the component.
printBorder
in class JComponent
g
- the Graphics
context in which to paintJComponent.print(java.awt.Graphics)
public final void printComponents(java.awt.Graphics g)
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