Switching between two forms

[Shikha Upadhyaya]

Hi,
I have a form which takes username and password and authenticates the user. I need to open a new form once OK is clicked. How to I do it?

[Swastik Dey]

public void actionPerformed(ActionEvent e){	
	Form2 f=new Form2();
	f.setVisible(true);
	f.setSize(300,200);
   }

[Mohamed Sanaulla]

You can look up for JDialog or may be JInternalFrame

[Michael Dunn]

> I need to open a new form once OK is clicked.

that is most unusual - the form is to open before the validation of username/password?

anyway, can you comfortably display a JFrame?

if so, your program should open with a JDialog requesting username/password. In the background
construct your JFrame, but do not set it to visible.

When the OK button is clicked:
validate username/password
if valid, frame.setVisible(true) and dialog.dispose()

[Shikha Upadhyaya]

I tried this code and it worked fine.

JFrame f=new JFrame();  
f.setVisible(true);  
f.setSize(300,200);

I now want to know how to close the parent frame automatically when the OK button is clicked.

[Swastik Dey]

Call dispose() on the JFrame object, which you wish to close.

[Digen Mahara]

Shikha Upadhyaya wrote:
I now want to know how to close the parent frame automatically when the OK button is clicked.

Shikha as Michael Dunn said use the dispose() method

eg : if your parent frame is Form1 then it works like this

   Form1 form1=new Form1();

        JFrame f=new JFrame();    
        f.setVisible(true);    
        f.setSize(300,200);

        /*Add this line of code*/
        form1.dispose();     //here form1 is the Object of the parent Frame this method shall close the Parent Frame

[Campbell Ritchie]

Agree with Mohammed earlier. You want a JDialog, which disappears after use. Much better than trying to create two frames and dispose of the second.
Actually, you can probably use the setDefaultCloseOperation method on the frame, with DISPOSE_ON_CLOSE, so the dispose() call may be unnecessary.

[Shikha Upadhyaya]

Digen Mahara wrote:Shikha as Michael Dunn said use the dispose() method
eg : if your parent frame is Form1 then it works like this

   Form1 form1=new Form1();

        JFrame f=new JFrame();    
        f.setVisible(true);    
        f.setSize(300,200);

        /*Add this line of code*/
        form1.dispose();     //here form1 is the Object of the parent Frame this method shall close the Parent Frame

I am not able to do this because my code is something like this:

public class PmtGui extends JFrame {

	private JPanel contentPane;
	private JTextField textFieldHN;
	private JTextField textFieldPW;

	/**
	 * Launch the application.
	 */
	public static void main(String[] args) {
		EventQueue.invokeLater(new Runnable() {
			public void run() {
				try {
					PmtGui frame = new PmtGui();
					frame.setVisible(true);
				} catch (Exception e) {
					e.printStackTrace();
				}
			}
		});
	}

	/**
	 * Create the frame.
	 */
	public PmtGui() {
		setTitle("Performance Monitor Tool for 8950 SAM");
		setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		setBounds(100, 100, 450, 300);
		contentPane = new JPanel();
		contentPane.setBorder(new EmptyBorder(5, 5, 5, 5));
		setContentPane(contentPane);
		contentPane.setLayout(null);
		
		JLabel lblHostName = new JLabel("Host Name:");
		lblHostName.setFont(new Font("Tahoma", Font.BOLD, 12));
		lblHostName.setBounds(117, 83, 83, 14);
		contentPane.add(lblHostName);
		
		JLabel lblPassword = new JLabel("Password:");
		lblPassword.setFont(new Font("Tahoma", Font.BOLD, 12));
		lblPassword.setBounds(117, 127, 67, 14);
		contentPane.add(lblPassword);
		
		textFieldHN = new JTextField();
		textFieldHN.setBounds(210, 81, 122, 20);
		contentPane.add(textFieldHN);
		textFieldHN.setColumns(10);
		
		JButton btnConnect = new JButton("Connect");
		btnConnect.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent arg0) {
				String host = textFieldHN.getText();			
				String passwd = textFieldPW.getText();
				try {
					String user = host.substring(0, host.indexOf('@'));
					host = host.substring(host.indexOf('@')+1);
		
					JSch jsch=new JSch();
					Session session=jsch.getSession(user, host, 22);
					java.util.Properties config = new java.util.Properties(); config.put("StrictHostKeyChecking", "no");
					session.setConfig(config);
					session.setHost(host);
					session.setPassword(passwd);
					session.connect();
					
					Channel channel = session.openChannel("shell");
					channel.setInputStream(System.in);
				    channel.setOutputStream(System.out);

				    channel.connect();
				    JOptionPane.showMessageDialog(null, "Connection successful");
				    contentPane.setVisible(false);
				    JFrame f=new JFrame();  
				    f.setVisible(true);  
				    f.setSize(300,200);
				}
				catch (Exception e){
					JOptionPane.showMessageDialog(null, "Incorrect hostname/password.");
				}
			}
		});

		btnConnect.setBounds(117, 193, 89, 23);
		contentPane.add(btnConnect);
		
		JButton btnCancel = new JButton("Cancel");
		btnCancel.addMouseListener(new MouseAdapter() {
			@Override
			public void mouseClicked(MouseEvent arg0) {
				PmtGui.this.dispose();
			}
		});
		btnCancel.setBounds(234, 193, 89, 23);
		contentPane.add(btnCancel);
		
		JLabel lblConnectToServer = new JLabel("Connect to Server");
		lblConnectToServer.setFont(new Font("Tahoma", Font.BOLD, 13));
		lblConnectToServer.setBounds(148, 29, 146, 14);
		contentPane.add(lblConnectToServer);
		
		textFieldPW = new JPasswordField(20);
		textFieldPW.setBounds(210, 125, 122, 20);
		contentPane.add(textFieldPW);
		textFieldPW.setColumns(10);
	}
}

[Swastik Dey]

JFrame f=new JFrame();    
f.setVisible(true);    
f.setSize(300,200);  
dispose();

[Shikha Upadhyaya]

Thanks all