How to Use GridLayout?

import java.awt.*;

public class TestGridLayout {

public static void main(String[] args){

Frame f = new Frame("TestGridLayout");

f.setSize(200,200);

f.setLayout(new GridLayout(2,3));

f.add(new Button("Button 1"));

f.add(new Button("Button 2"));

f.add(new Button("Button 3"));

f.add(new Button("Button 4"));

f.add(new Button("Button 5"));

f.setVisible(true);

}