netipaddressdemo4.java

来自「java程序设计语言源代码」· Java 代码 · 共 34 行

//Example 4 of Chapter 9

import java.net.*;
import java.awt.*;
import java.awt.event.*;
import java.applet.AppletContext;
import javax.swing.*;

public class NetIpAddressDemo4 extends JApplet implements ActionListener
{
	AppletContext browser;
	JTextField text;
	URL url;
	public void init()
	{
		Container container = getContentPane();
		text = new JTextField( 20 );
		container.add( text, BorderLayout.CENTER );
		text.addActionListener( this );
	}
	
	public void actionPerformed( ActionEvent e )
	{
		try{
			url = new URL( text.getText() );
		}
		catch( MalformedURLException exception )
		{
			exception.printStackTrace();
		}
		browser = getAppletContext();
		browser.showDocument( url );
	}
}