JTree树形结构

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//Tree.java
//树形结构
//2009-11-3
//<applet code=Tree width=200 height=100>
//</applet>

import javax.swing.*;
import java.awt.*;
import javax.swing.tree.*;

public class Tree extends JApplet
{
public void init(){
  DefaultMutableTreeNode root=new DefaultMutableTreeNode("JTree");
  DefaultMutableTreeNode colors=new DefaultMutableTreeNode("Color");
  DefaultMutableTreeNode style=new DefaultMutableTreeNode("style");
  DefaultMutableTreeNode sports=new DefaultMutableTreeNode("sports");
  root.add(colors);
  root.add(style);
  root.add(sports);

  DefaultMutableTreeNode red=new DefaultMutableTreeNode("Red");
  DefaultMutableTreeNode blue=new DefaultMutableTreeNode("blue");
  DefaultMutableTreeNode white=new DefaultMutableTreeNode("white");
  colors.add(red);
  colors.add(blue);
  colors.add(white);

  DefaultMutableTreeNode liNing=new DefaultMutableTreeNode("LiNING");
  DefaultMutableTreeNode nike=new DefaultMutableTreeNode("Nike");
  sports.add(liNing);
  sports.add(nike);

  JTree tree=new JTree(root);

  Container cp=getContentPane();
  cp.setLayout(new FlowLayout());
  cp.add(tree);
}
}