Clicking on a JPanel to draw shapes

Question

I have a JFrame containing 3 JPanels; Options, menu, canvas. In options there are a number of JButtons representing shapes. The aim is to click on the JButton of a shape e.g. re

Answer 1

The code you provided is not complete, but anyway the problem is in your mouseClicked method, if you change your second if to something like the following for example:

    if (e.getSource().equals(canvas) && createShape == true){
        int x = e.getX();
        int y = e.getY();
        s = new Rectangle(x,y,x+50,y+50);
        canvas.addShape(s);
    }

then a rectangle of width & height 50 will be painted whenever you click on the canvas, depending on your x, y location (you could change the fixed width/height by using a variable based on user input). Also, I'm not sure what you're trying to do in your first if section where you're adding a MouseListener to a newly created shape that is not added to the canvas, I guess there's something else you want to do...