How to use JOptionPane to print out put of your method?

Question

How to call this method--> printPrime(num,num1);

Answer 1

You can use showMessageDialog
JOptionPane.showMessageDialog(frame, Mymsg);

If you want to print the function it must return something. So I'm going to assume the method already returns something.

Command:
JOptionPane.showMessageDialog(null, printPrime(x, y));