How to open a new window from an external class in Java

Posted on 2011-03-25
Last Modified: 2012-05-11
I have an application that displays a main menu.  Then after clicking one of the buttons on the main menu, it should open a new window.  The code for the new JFrame to be displayed after clicking on the button, is in an external class.

How can I get this new window to display once the button is clicked?  Currently, the code I have doesn't respond to the button click. No errors are shown, but no new window is either.
//code in main class
public void actionPerformed(ActionEvent e)
         Object source = e.getSource();
        if (source == exitButton)
        else if (source == calculatorButton)
            prizeCalculator object1 = new prizeCalculator();

// Code snippet from external class that contains new window code

public class prizeCalculator

class prizeCalculatorFrame extends JFrame
    public prizeCalculatorFrame()
        setTitle("Prize Calculator");
        JPanel panel = new prizeCalculatorPanel();

Open in new window

Question by:deeayrian
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 2
LVL 47

Expert Comment

ID: 35220776
One thing that in constructore of your JFrame
you want to say


or simpler;

I guess there are also other isues
LVL 92

Accepted Solution

objects earned 500 total points
ID: 35220778
           prizeCalculator object1 = new prizeCalculator();
            JFrame frame = prizeCalculatorFrame();
LVL 47

Expert Comment

ID: 35220783

What means: prizeCalculatorFrame();

Author Closing Comment

ID: 35222097
Awesome!  Works perfectly.  Thanks SO much!

Featured Post

Free Tool: ZipGrep

ZipGrep is a utility that can list and search zip (.war, .ear, .jar, etc) archives for text patterns, without the need to extract the archive's contents.

One of a set of tools we're offering as a way to say thank you for being a part of the community.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Go is an acronym of golang, is a programming language developed Google in 2007. Go is a new language that is mostly in the C family, with significant input from Pascal/Modula/Oberon family. Hence Go arisen as low-level language with fast compilation…
In this post we will learn how to connect and configure Android Device (Smartphone etc.) with Android Studio. After that we will run a simple Hello World Program.
This tutorial covers a practical example of lazy loading technique and early loading technique in a Singleton Design Pattern.
The goal of the video will be to teach the user the concept of local variables and scope. An example of a locally defined variable will be given as well as an explanation of what scope is in C++. The local variable and concept of scope will be relat…

705 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question