import java.awt.*;import javax.swing.*;import com.heaton.bot.*;/** * Example program from Chapter 3 * Programming Spiders, Bots and Aggregators in Java * Copyright 2001 by Jeff Heaton * * * This example displays a mini-browser, similar to * chapter 3. This browser supports HTTPS(through * JSSE) and also allows access to HTTP password * protected sites. * * @author Jeff Heaton * @version 1.0 */public class SecureGET extends javax.swing.JFrame {  /**   * Constructor   */  public SecureGET()  {    //{{INIT_CONTROLS    setTitle("Secure GET");    getContentPane().setLayout(null);    setSize(405,305);    setVisible(false);    _url.setText("http://www.jeffheaton.com/secure/");    getContentPane().add(_url);    _url.setBounds(12,12,312,24);    _go.setText("GO!");    _go.setActionCommand("GO!");    getContentPane().add(_go);    _go.setBounds(336,12,60,24);    JScrollPane1.setOpaque(true);    getContentPane().add(JScrollPane1);    JScrollPane1.setBounds(12,48,384,252);    _body.setEditable(false);    JScrollPane1.getViewport().add(_body);    _body.setBounds(0,0,381,249);    //}}    //{{INIT_MENUS    //}}    //{{REGISTER_LISTENERS    SymAction lSymAction = new SymAction();    _go.addActionListener(lSymAction);    //}}    setLocation(32,32);  }  /**   * Constructor with a title.   *   * @param sTitle The title.   */  public SecureGET(String sTitle)  {    this();    setTitle(sTitle);  }  /**   * Added by Visual Cafe.   *   * @param b display or not.   */  public void setVisible(boolean b)  {    if ( b )      setLocation(50, 50);    super.setVisible(b);  }  /**   * The main function.  Program starts   * here.   *   * @param args Command line arguments not used.   */  static public void main(String args[])  {    (new SecureGET()).setVisible(true);  }  /**   * Added by Visual Cafe.   */  public void addNotify()  {    // Record the size of the window prior to calling    // parents addNotify.    Dimension size = getSize();    super.addNotify();    if ( frameSizeAdjusted )      return;    frameSizeAdjusted = true;    // Adjust size of frame according to the insets and menu bar    Insets insets = getInsets();    javax.swing.JMenuBar menuBar = getRootPane().getJMenuBar();    int menuBarHeight = 0;    if ( menuBar != null )      menuBarHeight = menuBar.getPreferredSize().height;    setSize(insets.left +            insets.right +            size.width,            insets.top +            insets.bottom +            size.height +            menuBarHeight);  }  /**   * Added by Visual Cafe   */  // Used by addNotify  boolean frameSizeAdjusted = false;  //{{DECLARE_CONTROLS  javax.swing.JTextField _url = new javax.swing.JTextField();  javax.swing.JButton _go = new javax.swing.JButton();  javax.swing.JScrollPane JScrollPane1 = new javax.swing.JScrollPane();  javax.swing.JTextArea _body = new javax.swing.JTextArea();  //}}  //{{DECLARE_MENUS  //}}  class SymAction implements java.awt.event.ActionListener {    public void actionPerformed(java.awt.event.ActionEvent event)    {      Object object = event.getSource();      if ( object == _go )        Go_actionPerformed(event);    }  }  /**   * This method is where most of the action happens.   * When the user clicks GO, this method is executed.   *   * @param event The event.   */  void Go_actionPerformed(java.awt.event.ActionEvent event)  {    boolean done = false;    // create a HTTP object outside the loop    HTTPSocket http = new HTTPSocket();    // loop until non-security error or success    while ( !done ) {      // Attempt to connect to the URL with no id/password      // the first time, then with an id/password on      // subsequent trys.      try {        http.send(_url.getText(),null);        _body.setText(http.getBody());        done = true;      } catch ( Exception e ) {        // was it a security error?        if ( e.getMessage().indexOf("401")!=-1 ) {          // did we already try an id/password          // if so display error          if ( (http.getUser().length()!=0) ||               (http.getPassword().length()!=0) ) {            JOptionPane.showMessageDialog(this,                  "Invalid user id/password.",                  "Security Error",                  JOptionPane.OK_CANCEL_OPTION,                  null );          }          // prompt the user for id/password          SecurePrompt prompt = new SecurePrompt(this);          prompt.show();          if ( (prompt._uid.getText().length()!=0) ||               (prompt._pwd.getText().length()!=0) ) {            // set the id/password for next try            http.setUser( prompt._uid.getText() );            http.setPassword( prompt._pwd.getText() );          } else            done = true;        } else          // something else bad happened, so give up          done=true;        _body.setText(e.getMessage());      }    }  }}