import java.awt.*;
import javax.swing.*;

public class SwingSetBounds{
	public static void main(String[] args){
		JFrame frame = new JFrame("Frame to set the bound");
		Rectangle bounds = new Rectangle(0, 0, 500, 500);
		frame.setMaximizedBounds(bounds);
		frame.setSize(400, 400);
		frame.setVisible(true);
		frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
	}
}