asked on

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

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)
            System.exit(0);
        else if (source == calculatorButton)
        {
            prizeCalculator object1 = new prizeCalculator();
            object1.new prizeCalculatorFrame();
       
        }
    }

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

public class prizeCalculator
{


 
class prizeCalculatorFrame extends JFrame
{
    public prizeCalculatorFrame()
    {
        setTitle("Prize Calculator");
        centerWindow(this);
        setResizable(false);
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        JPanel panel = new prizeCalculatorPanel();
        this.add(panel);
        this.pack();
    }

Open in new window

for_yan

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

this.setVisible(true);

or simpler

this.show();

I guess there are also other isues

ASKER CERTIFIED SOLUTION

Mick Barry

membership

This solution is only available to members.

To access this solution, you must be a member of Experts Exchange.

Start Free Trial

for_yan

What means:

object1.new prizeCalculatorFrame();

deeayrian

ASKER

Awesome! Works perfectly. Thanks SO much!