Updating a JFrame with a new panel

Hi,
i want to switch a JPanel placed in my JFrame. But if i do so, i always have to maximize the window and then bring it back again, to see the changes work completely.
I tried both repaint() and validate() but both do not work that I always have to maximize the window to see the changes.
Can anybody help me to solve this?
Thanks for answers in advance!

I don't know exactly what you mean by switching a JPanel.
You might want to read the CardLayout tutorial:
http://java.sun.com/docs/books/tutorial/uiswing/layout/card.html
If you replace a JPanel you need to call revalidate on the parent of the JPanel you are replacing.
If you want further help post a Short, Self Contained, Compilable and Executable, Example Program ([url http://homepage1.nifty.com/algafield/sscce.html]SSCCE) that demonstrates the problem.
And don't forget to use [url http://forum.java.sun.com/help.jspa?sec=formatting]code formatting when posting code.

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Replacing existing panel with a new panel.

I don't use swing much and I have ran into a small problem.
What is the standard procedure for replacing a jpanel on a
jframe with another jpanel in the exact same position?
Say you had a form on the first panel, when the user clicks
next it display a new panel with a confirmation of the results
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import java.awt.FlowLayout;
import java.awt.event.ActionEvent;
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     JButton jb1;
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          init();
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          setContentPane(jp1);
          setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
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     public JPanel panelTwo() {
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     public static void main(String[] args) {
          FrameTest ft = new FrameTest("Test");
      * On click I wish to replace panel one
      * with panel two
     public void actionPerformed(ActionEvent e) {
               //What can I add here?
}Regards

I just took a look on the Java Tutorial and it is exactly what I am after.
Thank you.

Updating a JFrame with a new panel

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