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Jtree Renderer

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Q)  jtree renderer and editor ?


Ans)

class QueryTreeRenderer extends DefaultTreeCellRenderer {
    public Component getTreeCellRendererComponent(
                        JTree tree,
                        Object value,
                        boolean sel,
                        boolean expanded,
                        boolean leaf,
                        int row,
                        boolean hasFocus) {


        Object obj = ((DefaultMutableTreeNode)value).getUserObject();
          JLabel leafNode = new JLabel();
          leafNode.setOpaque(true);
          leafNode.setText("YourNode");
          leafNode.setToolTipText("This is a Test Node");
          if(sel){
            leafNode.setBackground(Color.blue);
            leafNode.setForeground(Color.white);
            tree.setToolTipText(leafNode.getText());
          }else{
            leafNode.setBackground(Color.white);
            leafNode.setForeground(Color.black);
            tree.setToolTipText(null);
          }
          return leafNode;
    }
  }



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Jtree Renderer


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