Question

I am wondering if I can set the specified row and column color without defining my own custom TableCellRender.

Currently I am using this code

TableCellRenderer cellRenderer = this.devicePropertyTable.getCellRenderer(1, 1);
Component cellRenderComponent = cellRenderer.getTableCellRendererComponent(this.devicePropertyTable, "", false, false, 1, 1);

if (propertyValue.equalsIgnoreCase("true"))
{
    cellRenderComponent.setBackground(Color.green);
}
else
{
    cellRenderComponent.setBackground(Color.red);
}

I would assume that this would get the cell render-er for the table node 1,1 and color it with the respective color. But what happens is it will color the whole table.

Is there another way to do this without creating a custom TableCellRender?

Answer 1

EDIT: For this use case better use prepareRenderer as mentioned in the answer above.

You will have to extend JTable and override

<!-- language: lang-java -->
getCellRenderer(int row, int column)

public class MyTable extends JTable
{
   @Override
   public TableCellRenderer getCellRenderer(int row, int column) 
   {
      return new TableCellRenderer()
      {
          Component getTableCellRendererComponent(JTable table, Object value,
                    boolean isSelected, boolean hasFocus, 
                    int row, int column)
          {
              Component cellRenderComponent = this.MyTable.super.getCellRenderer(row, column);
              if (getModel().getValue(row,column).toString().equalsIgnoreCase("true"))
              {
                  cellRenderComponent.setBackground(Color.green);
              }
              else
              {
                  cellRenderComponent.setBackground(Color.red);
              }

          }
      }
   }

}