LazySample.java Source code

Introduction

Here is the source code for LazySample.java

Source

/*
Definitive Guide to Swing for Java 2, Second Edition
By John Zukowski       
ISBN: 1-893115-78-X
Publisher: APress
*/

import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Container;

import javax.swing.JFrame;
import javax.swing.JScrollPane;
import javax.swing.JTree;
import javax.swing.LookAndFeel;
import javax.swing.UIDefaults;
import javax.swing.UIManager;

public class LazySample {

    public static void main(String args[]) {

        JFrame frame = new JFrame("Lazy Example");

        Object iconObject = LookAndFeel.makeIcon(LazySample.class, "World.gif");
        UIManager.put("Tree.leafIcon", iconObject);

        Integer fifteen = new Integer(15);
        Object lazyArgs[] = new Object[] { Color.green, Boolean.TRUE, fifteen, fifteen };
        Object lazyDiamond = new UIDefaults.ProxyLazyValue("DiamondIcon", lazyArgs);
        UIManager.put("Tree.openIcon", lazyDiamond);

        JTree tree = new JTree();
        JScrollPane scrollPane = new JScrollPane(tree);

        Container contentPane = frame.getContentPane();
        contentPane.add(scrollPane, BorderLayout.CENTER);
        frame.setSize(200, 200);
        frame.setVisible(true);
    }
}