  -  InvisibleNodeTreeExample. java -  /  ( swing1.
1)  *  import java. awt. import java. awt.
event. import javax. swing. import javax. swing. tree.
import javax. swing. border.  /  *  @
version 1. 0 01/ 12/ 99 * public class InvisibleNodeTreeExample extends JFrame {  public InvisibleNodeTreeExample(
 {  super( InvisibleNode TreeExample"  String[  strs =  {
swing"  /  0 " platf"  /  1 "
basic"  /  2 " metal"  /  3 "
JTree"  /  4 InvisibleNode[  nodes =  new InvisibleNode[ strs.
length]  for ( int i= 0; i public static void main( String args[
 {  InvisibleNodeTreeExample frame =  new InvisibleNodeTreeExample(  frame. addWindowListener( new WindowAdapter(
 {  public void windowClosing( WindowEvent e)  { System. exit(
0)  }  frame. setSize( 300,  180)
 frame. setVisible( true)  }
