Show + image instead of handle in jtree

Question

I have created jtree. I have implemented my own TreeCellRendererComponent. I set the node images as per node type. My problem is, I need to get '+' sign to nodes not expanded and '-' for those expanded instead of default handles. How do I implement it?
public Component getTreeCellRendererComponent(
                    JTree tree, Object value, boolean isSelected,
                    boolean isExpanded, boolean isLeaf, int row,
                    boolean hasFocus) {
          super.getTreeCellRendererComponent( tree, value, isSelected,
                              isExpanded, isLeaf, row, hasFocus);
          Component compObject = this;
          if ( value instanceof EuamDefaultMutableTreeNode ) {
               EuamDefaultMutableTreeNode node = (EuamDefaultMutableTreeNode)value;
               setText( node.getText() );
               setIcon(isExpanded ? node.getOpenIcon() : node.getClosedIcon() );
               if( bIsRightImage_ && lblRightSideIcon_ != null ) {
                    lblRightSideIcon_.setIcon(node.getRightIcon());
          else {
               setText(value.toString());
          return compObject;
}

Answer 1

Tree node handles vary depending on which L&F u r using, java defaults to "javax.swing.plaf.metal.MetalLookAndFeel" which uses the "0-" type handles. To get the '+', '-' handles you need to be using windows L&F. Try adding this code to your apps main method:
try{
   UIManager.setLookAndFeel(
        "com.sun.java.swing.plaf.windows.WindowsLookAndFeel");
}catch (Exception e) {}Hope this helps