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<TITLE>Programmatically Making Selections in a JTable Component
(Java Developers Almanac Example)
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<META CONTENT="Patrick Chan" NAME="AUTHOR">
<META CONTENT="Code Examples from The Java Developers Almanac 1.4" NAME="DESCRIPTION">
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<B><A HREF="../javax.swing.table/pkg.html">javax.swing.table</A></B><font color="#666666" SIZE="-2">
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<B><A HREF="../javax.swing.table/pkg.html#Selection">Selection</A></B><font color="#666666" SIZE="-2">
[6 examples]
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<h3>
e940.
Programmatically Making Selections in a JTable Component</h3>
To select columns, <code>setColumnSelectionInterval()</code>,
<code>addColumnSelectionInterval()</code>, and
<code>removeColumnSelectionInterval()</code> are available. However, these
only work if <code>columnSelectionAllowed</code> is true and
<code>rowSelectionAllowed</code> is false. Likewise for rows.
<P> To select individual cells or blocks of cells, use
<code>changeSelection()</code>. However, both <code>columnSelectionAllowed</code> and
<code>rowSelectionAllowed</code> must be false.
<P> These selection methods observe the setting of the selection
mode. For example, if the selection mode is <code>SINGLE_SELECTION</code>,
only a single row, column, or cell can be made. See
<a href="../javax.swing.table/MultiSel.html" class="eglink"><font size="-1"><b>e939</b> Enabling Single or Multiple Selections in a JTable Component</font></a> for more information on
selection modes.
<pre>
int rows = <font color="#0066ff"><i>10</i></font>;
int cols = <font color="#0066ff"><i>5</i></font>;
JTable table = new JTable(rows, cols);
// Use this mode to demonstrate the following examples
table.setSelectionMode(ListSelectionModel.MULTIPLE_INTERVAL_SELECTION);
// The following column selection methods work only if these
// properties are set this way
table.setColumnSelectionAllowed(true);
table.setRowSelectionAllowed(false);
// Select a column - column 0
table.setColumnSelectionInterval(<font color="#0066ff"><i>0</i></font>, <font color="#0066ff"><i>0</i></font>);
// Select an additional range of columns - columns 1 to 2
table.addColumnSelectionInterval(<font color="#0066ff"><i>1</i></font>, <font color="#0066ff"><i>2</i></font>);
// Deselect a range of columns - columns 0 to 1
table.removeColumnSelectionInterval(<font color="#0066ff"><i>0</i></font>, <font color="#0066ff"><i>1</i></font>);
// The following row selection methods work only if these
// properties are set this way
table.setColumnSelectionAllowed(false);
table.setRowSelectionAllowed(true);
// Select a row - row 0
table.setRowSelectionInterval(<font color="#0066ff"><i>0</i></font>, <font color="#0066ff"><i>0</i></font>);
// Select an additional range of rows - rows 1 to 2
table.addRowSelectionInterval(<font color="#0066ff"><i>1</i></font>, <font color="#0066ff"><i>2</i></font>);
// Deselect a range of rows - rows 0 to 1
table.removeRowSelectionInterval(<font color="#0066ff"><i>0</i></font>, <font color="#0066ff"><i>1</i></font>);
// The following cell selection methods work only if these
// properties are set this way
table.setColumnSelectionAllowed(true);
table.setRowSelectionAllowed(true);
// Select a cell: cell (2,1)
int row = <font color="#0066ff"><i>2</i></font>;
int col = <font color="#0066ff"><i>1</i></font>;
boolean toggle = false;
boolean extend = false;
table.changeSelection(row, col, toggle, extend);
// Extend the selection to include all cells between (2,1) to (5,3)
row = <font color="#0066ff"><i>5</i></font>;
col = <font color="#0066ff"><i>3</i></font>;
toggle = false;
extend = true;
table.changeSelection(row, col, toggle, extend);
// Deselect a cell: cell (3,2)
// All cells in the row and column containing (3,2) are deselected.
row = <font color="#0066ff"><i>3</i></font>;
col = <font color="#0066ff"><i>2</i></font>;
toggle = true;
extend = false;
table.changeSelection(row, col, toggle, extend);
// This method actually toggles the selection state so that
// if it were called again, it exactly reverses the first call.
// Select cell (3,2) as well as the other cells that
// were deselected in the first call.
toggle = true;
extend = false;
table.changeSelection(row, col, toggle, extend);
// Select all cells
table.selectAll();
// Deselect all cells
table.clearSelection();
</pre>
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Related Examples
</font></td>
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</table>
e938. <a class="eglink" href="SelRowCol.html?l=rel">
Enabling Row, Column, or Cell Selections in a JTable Component
</a>
<br>
e939. <a class="eglink" href="MultiSel.html?l=rel">
Enabling Single or Multiple Selections in a JTable Component
</a>
<br>
e941. <a class="eglink" href="GetSel.html?l=rel">
Getting the Selected Cells in a JTable Component
</a>
<br>
e942. <a class="eglink" href="NoSel.html?l=rel">
Disabling Selections in a JTable Component
</a>
<br>
e943. <a class="eglink" href="GetAnchor.html?l=rel">
Getting the Anchor Cell in a JTable Component
</a>
<br>
<table width="600" CELLSPACING="0" CELLPADDING="2" BORDER="0">
<tr>
<td align="left">
<br>
See also:
<a class="eglink" href="/egs/javax.swing.table/pkg.html?l=rel#Cells">
Cells
</a>
<a class="eglink" href="/egs/javax.swing.table/pkg.html?l=rel#Column%20Heads">
Column Heads
</a>
<a class="eglink" href="/egs/javax.swing.table/pkg.html?l=rel#Columns">
Columns
</a>
<a class="eglink" href="/egs/javax.swing.table/pkg.html?l=rel#Editing">
Editing
</a>
<a class="eglink" href="/egs/javax.swing.table/pkg.html?l=rel#Events">
Events
</a>
<a class="eglink" href="/egs/javax.swing.table/pkg.html?l=rel#Layout">
Layout
</a>
<a class="eglink" href="/egs/javax.swing.table/pkg.html?l=rel#Rows">
Rows
</a>
<a class="eglink" href="/egs/javax.swing.table/pkg.html?l=rel#Scrolling">
Scrolling
</a>
<a class="eglink" href="/egs/javax.swing.table/pkg.html?l=rel#Sorting">
Sorting
</a>
<a class="eglink" href="/egs/javax.swing.table/pkg.html?l=rel#Table%20Model">
Table Model
</a>
<a class="eglink" href="/egs/javax.swing.table/pkg.html?l=rel#Tool%20Tips">
Tool Tips
</a>
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