In the implementation of the DefaultTableCellRenderer and JTable, the background
color of the table overrides any colors you might set in prepareRenderer. Try
writing your own TableCellRenderer and put your code there instead of in the JTable.
The interaction between the componenets is pretty complicated.
Evan McLain (junquemale -at- yahoo.com)
Bhangale, Bhushan wrote:
> Following is a prepare Renderer method which I am writing after
> subclassing the JTable class. But this doesn't work properly. When I
> select the row only at that time it shows the proper color.
>
> public Component prepareRenderer(TableCellRenderer renderer, int row,
> int column) {
> Component component = super.prepareRenderer(renderer, row, column);
>
> Long longTime = (Long) logMessageTableModel.getValueAt(row, 4);
> Object value = logMessageTableModel.getValueAt(row, column);
>
> if (null != longTime && ((System.currentTimeMillis() -
> longTime.longValue()) <= highlightDuration)) {
> component.setBackground(Color.cyan);
> }
> else if (1 == column && null != value) {
> String strValue = value.toString();
>
> if (strValue.equalsIgnoreCase("FATAL")) {
> component.setBackground(Color.red);
> } else {
> component.setBackground(null);
> }
> }
> else {
> component.setBackground(null);
> }
>
> return component;
> }
>
> Following is the code where I have created my Table Cell renderer. This
> works fine. In this I need to register the renderer for all the colums.
>
> JTable logMessageTable = new JTable();
> ColoredTableCellRenderer coloredTableCellRenderer = new
> ColoredTableCellRenderer();
>
>logMessageTable.getColumn(VTBrokerClient.logMessageTableColumnNames[0]).setCellRenderer(coloredTableCellRenderer);
>
>logMessageTable.getColumn(VTBrokerClient.logMessageTableColumnNames[1]).setCellRenderer(coloredTableCellRenderer);
>
>logMessageTable.getColumn(VTBrokerClient.logMessageTableColumnNames[2]).setCellRenderer(coloredTableCellRenderer);
>
>logMessageTable.getColumn(VTBrokerClient.logMessageTableColumnNames[3]).setCellRenderer(coloredTableCellRenderer);
> class ColoredTableCellRenderer extends DefaultTableCellRenderer {
> public Component getTableCellRendererComponent (JTable table, Object
> value, boolean selected, boolean focused, int row, int column) {
>
> Long longTime = (Long) logMessageTableModel.getValueAt(row, 4);
>
> if (null != longTime && ((System.currentTimeMillis() -
> longTime.longValue()) <= highlightDuration)) {
> setBackground(Color.cyan);
> }
> else if (1 == column && null != value) {
> String strValue = value.toString();
>
> if (strValue.equalsIgnoreCase("FATAL")) {
> setBackground(Color.red);
> } else {
> setBackground(null);
> }
> }
> else {
> setBackground(null);
> }
>
> super.getTableCellRendererComponent(table, value, selected, focused,
> row, column);
>
> return this;
> }
> }
>
>
>
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