Web Browser in Java Posted by Tyson , 30 April 2011 at 05:22, in Labels: Source Code

it will act as a web Browser.


import java.awt.*;
import java.awt.event.*;
import java.util.*;
import java.net.*;
import java.io.*;
import javax.swing.*;
import javax.swing.event.*;

public class WebBrowser
{
 public static void main(String [] args)
 {
  JFrame frame = new EditorPaneFrame();
  frame.show();
 }
}
class EditorPaneFrame extends JFrame
{

 private JTextField url;
 private JCheckBox editable;
 private JButton loadButton;
 private JButton backButton;
 private JEditorPane editorPane;
 private Stack urlStack = new Stack();


 public EditorPaneFrame()
 {
  setTitle("Java Web Browser");
  setSize(600,400);
  addWindowListener(new WindowAdapter()
  {
   public void windowClosing(WindowEvent e)
   {
    System.exit(0);
   }
  } );

  // set up text field and load button for typing in URL

  url = new JTextField(30);

  loadButton = new JButton("Load");
  loadButton.addActionListener(new ActionListener()
  {
   public void actionPerformed(ActionEvent event)
   {
    try
    {
     // remember URL for back button
     urlStack.push(url.getText());
     editorPane.setPage(url.getText());
    }
    catch(Exception e)
    {
     editorPane.setText("Error: " +e);
    }
   }
  });

  // set up back button and button action

  backButton = new JButton("Back");
  backButton.addActionListener(new ActionListener()
  {
   public void actionPerformed(ActionEvent event)
   {
    if(urlStack.size()<=1) return;
    try
    {
     urlStack.pop();
     String urlString = (String)urlStack.peek();
     url.setText(urlString);
     editorPane.setPage(urlString);
    }
    catch(IOException e)
    {
     editorPane.setText("Error : " +e);
    }
   }
  });

  editorPane = new JEditorPane();
  editorPane.setEditable(false);
  editorPane.addHyperlinkListener(new HyperlinkListener()
  {
   public void hyperlinkUpdate(HyperlinkEvent event)
   {
    if(event.getEventType() == HyperlinkEvent.EventType.ACTIVATED)
    {
     try
     {
      urlStack.push(event.getURL().toString());
      url.setText(event.getURL().toString());

      editorPane.setPage(event.getURL());
     }
     catch(IOException e)
     {
      editorPane.setText("Error: " + e);
     }
    }
   }
  });

  editable = new JCheckBox();
  editable.addActionListener(new ActionListener()
  {
   public void actionPerformed(ActionEvent event)
   {
    editorPane.setEditable(editable.isSelected());
   }
  });

  Container contentPane = getContentPane();
  contentPane.add(new JScrollPane(editorPane), "Center");

  JPanel panel = new JPanel();
  panel.add(new JLabel("URL"));
  panel.add(url);
  panel.add(loadButton);
  panel.add(backButton);
  panel.add(new JLabel("Editable"));
  panel.add(editable);

  contentPane.add(panel,"South");
 }

}