mejt.java

找到的一个jtree的例子,感觉还可以的,适用于初学者,建议菜鸟看看.

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

class MeJT extends JFrame {

    public MeJT() {
        /*addWindowListener(new WindowAdapter() {
          public void windowClosing(WindowEvent e) {
          dispose();
          System.exit(0);
          }
          });*/
        Container c = getContentPane();
        c.setLayout(new BorderLayout());
        DefaultMutableTreeNode dtree = new DefaultMutableTreeNode("文件");
        DefaultMutableTreeNode dtreea = new DefaultMutableTreeNode("我的文件");
        DefaultMutableTreeNode dtreeb = new DefaultMutableTreeNode("你的文件");

        DefaultMutableTreeNode dtreea1 = new DefaultMutableTreeNode("文件1");
        DefaultMutableTreeNode dtreea2 = new DefaultMutableTreeNode("文件2");
        DefaultMutableTreeNode dtreea3 = new DefaultMutableTreeNode("文件3");

        DefaultMutableTreeNode dtreeb1 = new DefaultMutableTreeNode("你的文件1");
        DefaultMutableTreeNode dtreeb2 = new DefaultMutableTreeNode("你的文件2");
        DefaultMutableTreeNode dtreeb3 = new DefaultMutableTreeNode("你的文件3");

        dtree.add(dtreea);
        dtree.add(dtreeb);

        dtreea.add(dtreea1);
        dtreea.add(dtreea2);
        dtreea.add(dtreea3);

        dtreeb.add(dtreeb1);
        dtreeb.add(dtreeb2);
        dtreeb.add(dtreeb3);

        JTree t = new JTree(dtree);
        c.add(t, BorderLayout.CENTER);

    }

    public static void main(String args[]) {
        System.out.println("Starting MeJT...");
        MeJT mainFrame = new MeJT();
        mainFrame.setSize(400, 400);
        mainFrame.setTitle("MeJT");
        mainFrame.setVisible(true);
    }
}