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  1. Code :
  2. import java.awt.*;
  3. import java.awt.event.*;
  4. import java.util.*;
  5. import java.net.*;
  6. import java.io.*;
  7. import javax.swing.*;
  8. import javax.swing.event.*;
  9.  
  10. public class WebBrowser
  11. {
  12.      public static void main(String [] args)
  13.      {
  14.           JFrame frame = new EditorPaneFrame();
  15.           frame.show();
  16.      }
  17. }
  18. class EditorPaneFrame extends JFrame
  19. {
  20.  
  21.      private JTextField url;
  22.      private JCheckBox editable;
  23.      private JButton loadButton;
  24.      private JButton backButton;
  25.      private JEditorPane editorPane;
  26.      private Stack urlStack = new Stack();
  27.  
  28.  
  29.      public EditorPaneFrame()
  30.      {
  31.           setTitle("Java Web Browser");
  32.           setSize(600,400);
  33.           addWindowListener(new WindowAdapter()
  34.           {
  35.                public void windowClosing(WindowEvent e)
  36.                {
  37.                     System.exit(0);
  38.                }
  39.           } );
  40.  
  41.           // set up text field and load button for typing in URL
  42.  
  43.           url = new JTextField(30);
  44.  
  45.           loadButton = new JButton("Load");
  46.           loadButton.addActionListener(new ActionListener()
  47.           {
  48.                public void actionPerformed(ActionEvent event)
  49.                {
  50.                     try
  51.                     {
  52.                          // remember URL for back button
  53.                          urlStack.push(url.getText());
  54.                          editorPane.setPage(url.getText());
  55.                     }
  56.                     catch(Exception e)
  57.                     {
  58.                          editorPane.setText("Error: " +e);
  59.                     }
  60.                }
  61.           });
  62.  
  63.           // set up back button and button action
  64.  
  65.           backButton = new JButton("Back");
  66.           backButton.addActionListener(new ActionListener()
  67.           {
  68.                public void actionPerformed(ActionEvent event)
  69.                {
  70.                     if(urlStack.size()<=1) return;
  71.                     try
  72.                     {
  73.                          urlStack.pop();
  74.                          String urlString = (String)urlStack.peek();
  75.                          url.setText(urlString);
  76.                          editorPane.setPage(urlString);
  77.                     }
  78.                     catch(IOException e)
  79.                     {
  80.                          editorPane.setText("Error : " +e);
  81.                     }
  82.                }
  83.           });
  84.  
  85.           editorPane = new JEditorPane();
  86.           editorPane.setEditable(false);
  87.           editorPane.addHyperlinkListener(new HyperlinkListener()
  88.           {
  89.                public void hyperlinkUpdate(HyperlinkEvent event)
  90.                {
  91.                     if(event.getEventType() ==
  92. HyperlinkEvent.EventType.ACTIVATED)
  93.                     {
  94.                          try
  95.                          {
  96.                               urlStack.push(event.getURL().toString());
  97.                               url.setText(event.getURL().toString());
  98.  
  99.                               editorPane.setPage(event.getURL());
  100.                          }
  101.                          catch(IOException e)
  102.                          {
  103.                               editorPane.setText("Error: " + e);
  104.                          }
  105.                     }
  106.                }
  107.           });
  108.  
  109.           editable = new JCheckBox();
  110.           editable.addActionListener(new ActionListener()
  111.           {
  112.                public void actionPerformed(ActionEvent event)
  113.                {
  114.                     editorPane.setEditable(editable.isSelected());
  115.                }
  116.           });
  117.  
  118.           Container contentPane = getContentPane();
  119.           contentPane.add(new JScrollPane(editorPane), "Center");
  120.  
  121.           JPanel panel = new JPanel();
  122.           panel.add(new JLabel("URL"));
  123.           panel.add(url);
  124.           panel.add(loadButton);
  125.           panel.add(backButton);
  126.           panel.add(new JLabel("Editable"));
  127.           panel.add(editable);
  128.  
  129.           contentPane.add(panel,"South");
  130.      }
  131.  
  132. }
Runtime error #stdin #stdout 0.02s 4980KB
comments (?)
stdin 
Standard input is empty
stdout 
Standard output is empty
https://ideone.com/u6seX
language:
JavaScript (SMonkey 60.2.3)
created:
14 years ago
visibility:
public

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