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POrefreshing background color for a row in jtable
 

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  1. POrefreshing background color for a row in jtable
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    <p>i am trying to set the color of row of a Swing Jtable. i use this class to extend Jtable as suggest on the net.</p> <pre><code> public class ColorTable extends JTable { private static final long serialVersionUID = 1L; private Map rowColor = new HashMap(); private Map columnColor = new HashMap(); private Color cellColor; private Color defaultColor; public ColorTable( TableModel model ) { super( model ); } public void setRowColor( int row, Color c) { rowColor.put( new Integer( row ), c ); } public void setColumnColor( int column, Color c ) { columnColor.put( new Integer( column ), c ); } public void setCellColor( Color c ) { cellColor = c; } public Class getColumnClass(int column) { return getValueAt(0, column).getClass(); } public Component prepareRenderer( TableCellRenderer renderer, int row, int column ) { Component c = super.prepareRenderer( renderer, row, column ); if ( defaultColor == null ) defaultColor = c.getBackground(); // Color order is as follows: // rowSelection, checkBox toggle for row color, column color, cell color if ( ! isRowSelected( row ) ) { Color color = (Color) rowColor.get( new Integer( row ) ); if ( color == null || Boolean.FALSE.equals( getModel().getValueAt( row, 0 ) ) ) color = (Color) columnColor.get( new Integer( column ) ); if ( color == null ) { // cell color only if cell has special value, for example purposes, // if the cell value begins with a 2 Object value = getValueAt( row, column ); if ( value != null &amp;&amp; value.toString().startsWith( "2" ) ) color = cellColor; } if ( color != null ) c.setBackground( color ); else c.setBackground( defaultColor ); } return c; } public void resetColor(Color color) { for(int i=0;i&lt;this.getRowCount();i++) this.setRowColor(i, color); } } </code></pre> <p>I simply added the method resetColor(Color color) in order to initialize all the row with the same color.</p> <p>It seams to work at first use but when i want to change the colors i get problems. for instance if I execute the sollowing code within a button action listener i color the table properly just at the first iteration and after never changes the background.</p> <pre><code>deployTable.resetColor(Color.green); // set red background to the for (Integer x : indexes) { System.out.println("index "+x+" red!"); deployTable.setRowColor(x, Color.red); } deployTable.revalidate(); </code></pre> <p>does anyone has any idea about what could it be??</p> <p>Thanks, Ste</p>
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