Question

Hi guys I am writing a little program in java and it’s my first try at anything with an interface/picture.

It makes the frame for me but when I click the close button X, it doesn’t close it just treats it like nothing happened…any ideas?

class Graph extends Canvas{

    public Graph(){
        setSize(200, 200);
        setBackground(Color.white);
    }

    public static void main(String[] args){

        Graph gr = new Graph();  

        Frame aFrame = new Frame();
        aFrame.setSize(300, 300);       
        aFrame.add(gr);       
        aFrame.setVisible(true);

    }

Answer 1

Is that java.awt.Frame? I think you need to explicitly add the handler for so:

frame.addWindowListener(new WindowAdapter(){
  public void windowClosing(WindowEvent we){
    System.exit(0);
  }
}

I used this source for so.

If it were swing it would be something like jframe.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE)