multilinetreeexample.java

Java中Swing界面库中几个类使用的例子

/* (swing1.1beta3) */
//package jp.gr.java_conf.tame.swing.examples;

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.tree.*;
import jp.gr.java_conf.tame.swing.tree.*;


/**
 * @version 1.0 11/09/98
 */
public class MultiLineTreeExample extends JFrame {
  public MultiLineTreeExample() {
    super("Multi-Line JTree Example");

    String[] strs = { "swing",              // 0
                      "package",            // 1
                      "java.awt.swing\n"
                    + "com.sun.java.swing", // 2
                      "javax.swing",        // 3
                      "JTree"};             // 4
                                             
    DefaultMutableTreeNode[] nodes = new DefaultMutableTreeNode[strs.length];
    for (int i=0;i<strs.length;i++) {
      nodes[i] = new DefaultMutableTreeNode(strs[i]); 
    }
    nodes[0].add(nodes[1]);
    nodes[1].add(nodes[2]);
    nodes[1].add(nodes[3]);
    nodes[0].add(nodes[4]);

    JTree tree = new JTree( nodes[0] );
    tree.setCellRenderer(new MultiLineCellRenderer());
    JScrollPane sp = new JScrollPane();
    sp.getViewport().add(tree);
    getContentPane().add(sp, BorderLayout.CENTER);
  }

  public static void main(String args[]) {
    MultiLineTreeExample frame = new MultiLineTreeExample();
    frame.addWindowListener(new WindowAdapter() {
      public void windowClosing(WindowEvent e) {System.exit(0);}
    });
    frame.setSize(300, 150);
    frame.setVisible(true);
  }
}