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<TITLE>Shading Rows and Columns in a JTable Component (Java Developers Almanac Example)
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<h3>e914. Shading Rows and Columns in a JTable Component</h3>
The simplest way of shading alternate rows or columns in a JTable
component is to override the <code>prepareRenderer()</code> method. The table
calls this method for every cell, just prior to displaying it. The
override should call the superclass and retrieve the prepared
component. It can then modify the background and foreground colors to
achieve any desired pattern of shaded rows and columns.
<pre> // This table shades every other row yellow
JTable table = new JTable() {
public Component prepareRenderer(TableCellRenderer renderer,
int rowIndex, int vColIndex) {
Component c = super.prepareRenderer(renderer, rowIndex, vColIndex);
if (rowIndex % <font color="#0066ff"><i>2</i></font> == 0 && !isCellSelected(rowIndex, vColIndex)) {
c.setBackground(<font color="#0066ff"><i>Color.yellow</i></font>);
} else {
// If not shaded, match the table's background
c.setBackground(getBackground());
}
return c;
}
};
// This table shades every other column yellow
table = new JTable() {
public Component prepareRenderer(TableCellRenderer renderer,
int rowIndex, int vColIndex) {
Component c = super.prepareRenderer(renderer, rowIndex, vColIndex);
if (vColIndex % <font color="#0066ff"><i>2</i></font> == 0 && !isCellSelected(rowIndex, vColIndex)) {
c.setBackground(<font color="#0066ff"><i>Color.yellow</i></font>);
} else {
// If not shaded, match the table's background
c.setBackground(getBackground());
}
return c;
}
};
</pre>
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<b>Related Examples</b></font></td>
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e907. <a class="eglink" href="GetSize.html?l=rel">
Getting the Number of Rows and Columns in a JTable Component
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e908. <a class="eglink" href="AppendRow.html?l=rel">
Appending a Row to a JTable Component
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e909. <a class="eglink" href="InsertRow.html?l=rel">
Inserting a Row in a JTable Component
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e910. <a class="eglink" href="RemoveRow.html?l=rel">
Removing a Row from a JTable Component
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e911. <a class="eglink" href="MoveRow.html?l=rel">
Moving a Row in a JTable Component
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e912. <a class="eglink" href="CopyRow.html?l=rel">
Copying a Row or Column in a JTable Component
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e913. <a class="eglink" href="RowHeight.html?l=rel">
Setting the Height of a Row in a JTable Component
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<table width="600" CELLSPACING="0" CELLPADDING="2" BORDER="0">
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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#Scrolling">
Scrolling
</a>
<a class="eglink" href="/egs/javax.swing.table/pkg.html?l=rel#Selection">
Selection
</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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