What this is

This file is part of the Tame Swing collection that we have compiled. All of the Java source code in these examples was created by Nobuo Tamemasa. As these examples have become hard to find on the internet, we have put them in one place here, supported by minimal advertising. In time we will include images of each running sample Java/Swing application.

The intent of having these files here is to help you learn Java and Swing by example, and Tame certainly created some terrific examples of the power of the Swing framework.

Other links

Keywords/tags

java, swing, JTree, tree, multiline, multi-line, multiple lines, textarea, area, model, TreeModel, DefaultTreeModel, TreeNode, TreePath, ImageObserver, event

The source code

/* (swing1.1beta3) */
package tame.examples;

import java.awt.BorderLayout;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;

import javax.swing.JFrame;
import javax.swing.JScrollPane;
import javax.swing.JTree;
import javax.swing.tree.DefaultMutableTreeNode;

import tame.tree.MultiLineCellRenderer;

/**
@author Nobuo Tamemasa
@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);
  }
}