javax.swing.JPasswordField#getPassword ( )源码实例Demo

private PasswordAuthentication getCredential(String msg, boolean proxy) {
	JTextField user = new JTextField(30);
	JPasswordField pass = new JPasswordField(30);

	String prompt = proxy ? StringResource.get("PROMPT_PROXY")
			: String.format(StringResource.get("PROMPT_SERVER"), msg);

	Object[] obj = new Object[5];
	obj[0] = prompt;
	obj[1] = StringResource.get("DESC_USER");
	obj[2] = user;
	obj[3] = StringResource.get("DESC_PASS");
	obj[4] = pass;

	if (JOptionPane.showOptionDialog(null, obj, StringResource.get("PROMPT_CRED"), JOptionPane.OK_CANCEL_OPTION,
			JOptionPane.PLAIN_MESSAGE, null, null, null) == JOptionPane.OK_OPTION) {
		PasswordAuthentication pauth = new PasswordAuthentication(user.getText(), pass.getPassword());
		return pauth;
	}
	return null;
}
 

public static String showUnlockWalletDialog()
{
	JPanel userPanel = new JPanel();
	userPanel.setLayout(new GridLayout(2,2));

	//Labels for the textfield components        
	JLabel passwordLbl = new JLabel("Enter wallet password:");
	JPasswordField passwordFld = new JPasswordField();

	//Add the components to the JPanel        
	userPanel.add(passwordLbl);
	userPanel.add(passwordFld);

	//As the JOptionPane accepts an object as the message
	//it allows us to use any component we like - in this case 
	//a JPanel containing the dialog components we want
	if(JOptionPane.showConfirmDialog(null, userPanel, "Unlock Wallet" ,JOptionPane.OK_CANCEL_OPTION, JOptionPane.QUESTION_MESSAGE) == JOptionPane.OK_OPTION)
	{
		return new String(passwordFld.getPassword());
	}
	
	return "";
}
 

public RemoteTopology buildRemoteTopology() {
    String localSharedFolderPath = getLocalSharedFolderPath();
    String localPassword = null;
    JPasswordField localPasswordTextField = getLocalPasswordTextField();
    if (localPasswordTextField != null) {
        localPassword = new String(localPasswordTextField.getPassword());
    }

    RemoteTopology remoteTopology = new RemoteTopology(getRemoteSharedFolderPath(), getRemoteUsername(), getRemotePassword());
    remoteTopology.setLocalMachineData(localSharedFolderPath, localPassword);

    ListModel<RemoteMachineProperties> listModel = getRemoteMachinesList().getModel();
    for (int i=0; i<listModel.getSize(); i++) {
        remoteTopology.addRemoteMachine(listModel.getElementAt(i));
    }
    return remoteTopology;
}
 

@Override
public String readPassword(String promptMessage) {
    final JPasswordField jpf = new JPasswordField();
    JOptionPane jop = new JOptionPane(jpf,
            JOptionPane.QUESTION_MESSAGE,
            JOptionPane.OK_CANCEL_OPTION);
    JDialog dialog = jop.createDialog(promptMessage);
    dialog.addComponentListener(new ComponentAdapter() {
        @Override
        public void componentShown(ComponentEvent e) {
            SwingUtilities.invokeLater(new Runnable() {
                @Override
                public void run() {
                    jpf.requestFocusInWindow();
                }
            });
        }
    });
    dialog.setVisible(true);
    int result = (Integer) jop.getValue();
    dialog.dispose();
    String password = null;
    if (result == JOptionPane.OK_OPTION) {
        password = new String(jpf.getPassword());
    }
    if (StringUtils.isEmpty(password)) {
        return null;
    } else {
        return password;
    }
}
 

@Override
public String inputPassword(String messageText) {
	final JPasswordField passwordField = new JPasswordField();
	JOptionPane jop = new JOptionPane(new Object[] { messageText, passwordField }, JOptionPane.QUESTION_MESSAGE,
			JOptionPane.OK_CANCEL_OPTION);
	JDialog dialog = jop.createDialog("Authentication required");
	dialog.addComponentListener(new ComponentAdapter() {

		@Override
		public void componentShown(ComponentEvent e) {
			SwingUtilities.invokeLater(new Runnable() {

				@Override
				public void run() {
					passwordField.requestFocusInWindow();
					passwordField.requestFocus();
				}
			});
		}
	});
	dialog.setVisible(true);
	int result = (Integer) jop.getValue();
	if (result == JOptionPane.OK_OPTION) {
		return new String(passwordField.getPassword());
	} else {
		return null;
	}
}
 

@Override
public void actionPerformed(final ActionEvent e) {
  final JLabel label = new JLabel("Enter Password, (Leave blank for no password).");
  final JPasswordField passwordField = new JPasswordField();
  final JPanel panel = new JPanel();
  panel.setLayout(new BorderLayout());
  panel.add(label, BorderLayout.NORTH);
  panel.add(passwordField, BorderLayout.CENTER);
  final int selectedOption =
      JOptionPane.showOptionDialog(
          JOptionPane.getFrameForComponent(parent),
          panel,
          "Enter Password",
          JOptionPane.OK_CANCEL_OPTION,
          JOptionPane.PLAIN_MESSAGE,
          null,
          null,
          null);
  if (selectedOption != JOptionPane.OK_OPTION) {
    return;
  }
  final String password = new String(passwordField.getPassword());
  final boolean passworded;
  if (!password.isBlank()) {
    validator.setGamePassword(password);
    passworded = true;
  } else {
    validator.setGamePassword(null);
    passworded = false;
  }
  if (lobbyWatcher != null && lobbyWatcher.isActive()) {
    lobbyWatcher.setPassworded(passworded);
  }
}
 

@Override
public void collect() throws CredentialCollectionException {
  JLabel jl = new JLabel("Enter Your username: ");
  JTextField juf = new JTextField(24);
  JLabel jl2 = new JLabel("Enter Your password:  ");
  JPasswordField jpf = new JPasswordField(24);
  Box box1 = Box.createHorizontalBox();
  box1.add(jl);
  box1.add(juf);
  Box box2 = Box.createHorizontalBox();
  box2.add(jl2);
  box2.add(jpf);
  Box box = Box.createVerticalBox();
  box.add(box1);
  box.add(box2);

  // JDK-5018574 : Unable to set focus to another component in JOptionPane
  SwingUtils.workAroundFocusIssue(juf);

  int x = JOptionPane.showConfirmDialog(null, box,
      "KnoxShell Login", JOptionPane.OK_CANCEL_OPTION);

  if (x == JOptionPane.OK_OPTION) {
    ok = true;
    username = juf.getText();
    pass = jpf.getPassword();
  }
}
 

/**
 * Ask using a GUI for the username and password.
 */
private void readFromGUI() {
   // Create fields for user name.
   final JTextField usernameField = new JTextField(20);
   usernameField.setText(this.username);
   final JLabel usernameLabel = new JLabel("Username: ");
   usernameLabel.setLabelFor(usernameField);
   final JPanel usernamePane = new JPanel(new FlowLayout(FlowLayout.TRAILING));
   usernamePane.add(usernameLabel);
   usernamePane.add(usernameField);

   // Create fields for password.
   final JPasswordField passwordField = new JPasswordField(20);
   passwordField.setText(this.password);
   final JLabel passwordLabel = new JLabel("Password: ");
   passwordLabel.setLabelFor(passwordField);
   final JPanel passwordPane = new JPanel(new FlowLayout(FlowLayout.TRAILING));
   passwordPane.add(passwordLabel);
   passwordPane.add(passwordField);

   // Create panel
   final JPanel main = new JPanel();
   main.setLayout(new BoxLayout(main, BoxLayout.PAGE_AXIS));
   main.add(usernamePane);
   main.add(passwordPane);

   // Create and handle dialog
   final JOptionPane jop = new JOptionPane(main, JOptionPane.QUESTION_MESSAGE, JOptionPane.OK_CANCEL_OPTION);
   final JDialog dialog = jop.createDialog("User name and password");
   dialog.addComponentListener(new ComponentAdapter() {
      
      public void componentShown(ComponentEvent e) {
         SwingUtilities.invokeLater(new Runnable() {
            
            public void run() {
               if (usernameField.getText().isEmpty())
               {
                  usernameField.requestFocusInWindow();
               }
               else
               {
                  passwordField.requestFocusInWindow();
               }
            }
         });
      }
   });
   dialog.setVisible(true);
   final Integer result = (Integer) jop.getValue();
   dialog.dispose();
   if (result.intValue() == JOptionPane.OK_OPTION) {
      this.username = usernameField.getText();

      final char[] pwd = passwordField.getPassword();
      this.password = new String(pwd);
   }
}