imageviewer.java

java编程开发技巧与实例的编译测试通过的所有例程

import java.awt.event.*;
import javax.swing.*;
import javax.swing.event.*;
public class ImageViewer extends JFrame implements ListSelectionListener
{
	private String FILES[]	=	{"bmw_x5.jpg", "river.jpg", "swan.gif"};
	private DefaultListModel data	=	new DefaultListModel();
	private JList list	=	new JList(data);
	private JLabel image	=	null;
	private class WindowCloser extends WindowAdapter
	{
		public void windowClosing(WindowEvent we)
		{	System.exit(0);	}
	}
	public ImageViewer()
	{
		super("Image Viewer");
		for (int i = 0; i < FILES.length; i ++)
			data.addElement("Image/" + FILES[i]);
		image	=	new JLabel(new ImageIcon(FILES[0]), SwingConstants.CENTER);
		list.setSelectedIndex(0);
		list.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
		JScrollPane scrollList	=	new JScrollPane(list);
		JScrollPane scrollImage	=	new JScrollPane(image);
		JSplitPane splitPane	=	new JSplitPane(JSplitPane.HORIZONTAL_SPLIT, scrollList, scrollImage);
		getContentPane().add("Center", splitPane);
		list.addListSelectionListener(this);
		addWindowListener(new WindowCloser());
		
		validate();
		pack();
		setLocationRelativeTo(null);
		setSize(700, 300);
		setVisible(true);
	}
	public void valueChanged(ListSelectionEvent lse)
	{
		if (!lse.getValueIsAdjusting())
			image.setIcon(new ImageIcon(list.getSelectedValue().toString()));
	}
	public static void main(String args[])
	{
		ImageViewer iv	=	new ImageViewer();
	}
}