How to close a window and open another one

[George Papadopoulos]

I'm a very new programmer so this question may sound stupid but: How do i make a JButton close the current window and open a new one?For example a have an introduction screen in my program and when the user clicks on continue I want it to open the main application window.
Thanx a lot!!

[Michael Dunn]

Something like this perhaps

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
class OpeningWindow extends JFrame implements ActionListener
{
  JButton btn = new JButton("Continue");
  public OpeningWindow()
  {
    setTitle("Opening Window");
    setDefaultCloseOperation(JFrame.DO_NOTHING_ON_CLOSE);
    setLocation(200,100);
    setSize(200,100);
    Container frame = getContentPane();
    JPanel jp = new JPanel();
    btn.addActionListener(this);
    JLabel lbl = new JLabel("I am the opening window");
    jp.add(lbl,BorderLayout.NORTH);
    jp.add(btn,BorderLayout.SOUTH);
    frame.add(jp);
  }
  public void actionPerformed(ActionEvent ae)
  {
    new MainWindow().setVisible(true);
    this.dispose();
  }
  public static void main( String[] args){new OpeningWindow().setVisible(true);}
}
class MainWindow extends JFrame
{
  public MainWindow()
  {
    setTitle("Main Window");
    setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    setLocation(400,100);
    setSize(600,400);
    Container frame = getContentPane();
    JPanel jp = new JPanel();    
    JLabel lbl = new JLabel("I am the main window");
    jp.add(lbl);
    frame.add(jp);
  }
}

[George Papadopoulos]

Thank u very much.u've been a great help.
Another question...
what documentation do i need to find commands like dispose etc.?
is there any help program for java or a good reference book maybe?

[Michael Dunn]

The java api is a good site (you can download it, about 30mb zip)
http://java.sun.com/j2se/1.4.2/docs/api/index.html
Depending on your IDE, if you download and instal the api docs, then point
your IDE to where you've unzipped it, you can (generally) highlight the
class name, click on help/JDK help and the api page will open. You can then
go through all of the methods of the class (to see what they do), and check
for inherited methods - in this case dispose() is a method of Window.