How to maximize a JFrame through code?

Question

How to maximize a JFrame through code?

Answer 1

setExtendedState(JFrame.MAXIMIZED_BOTH); is not working is java 7

You can try this code it works.

     Toolkit tk = Toolkit.getDefaultToolkit();  
     int xSize = ((int) tk.getScreenSize().getWidth());  
     int ySize = ((int) tk.getScreenSize().getHeight());  
     setSize(xSize,ySize);