import java.io.IOException;
import java.net.URL;
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import javax.swing.event.*;

public class WebBrowser extends JFrame
{
JPanel contentPane;
BorderLayout borderLayoutAll = new BorderLayout();
JLabel jLabelPrompt = new JLabel();
JPanel jPaneMain = new JPanel();
BorderLayout borderLayoutMain = new BorderLayout();
JTextField textFieldURL = new JTextField();
JEditorPane jEditorPane = new JEditorPane();

public WebBrowser()
{
try
{
Init();
}catch(Exception e){
e.printStackTrace();
}
}

private void Init() throws Exception
{
contentPane=(JPanel) getContentPane();
contentPane.setLayout(borderLayoutAll);
jPanelMain.setLayout(borderLayoutMain);
jLabelPrompt.setText("请输入URL");

textFieldURL.setText("");
textFieldURL.addActionListener(new java.awt.event.ActionListener()
{
public void actionPerformed(ActionEvent e)
{
textFieldURl_actionPerformed(e);
}
});

jEditorPane.setEditable(false);
jEditorPane.addHyperlinkListener(new javax.swing.event.HyperlinkEvent()
{
public void hyperlinkUpdate(HyperlinkEvent e)
{
jEditorPane_hyperlinkUpdate(e);
}
});
JScrollPane scrollPane=new JScrollPane();
scrollPane.getViewport().add(jEditorPane);
jPanelMain.add(textFieldURL,"North");
jPanelMain.add(scrollPane,"Center");
contentPane.add(jLablePrompt,"North");
contentPane.add(jPaneMain,"Center");
enableEvents(AWTEvent.WINDOW_EVENT_MASK);
this.setSize(new Dimension(600,500));
this.setTitle("胖胖专用浏览器");
this.setVisible(true);
}

void textFieldURL_actionPerformed(ActionEvent e)
{
try
{
jEditorpane.setPage(textFieldURL.getText());
}catch(IOException ex)
{
JOptionPane msg=new JOptionPane();
JOptionPane.showMessageDialog(this,"URL地址不正确:"+textFieldURL.getText(),"输入不正确!",0);
}
}

void jEditorPane_hyperlinkUpdate(HyperlinkEvent e)
{
if (e.getEventType( )
javax.swing.event.HyperlinkEvent.EventType.ACTIVATED)
{
try
{
URL url=e.getURL();
jEditorPane.setPage(url);
textFieldURL.setText(url.toString());
}catch(IOException io)
{
JOptionPane msg=new JOptionPane();
JOptionPane.showMessageDialog(this,"打开联接失败!","输入不正确!",0);
}
}
}

protected void processWindowEvent(WindowEvent e)
{
super.processWindowEvent(e);
if (e.getID() ==WindowEvent.WINDOW_CLOSING)
{
System.exit(0);
}
}

public static void main(String[] args)
{
new WebBrowser();
}
}