java例程练习（BorderLayou&GridLayout)

import java.awt.*;public class TestBorderLayout {public static void main(String[] args) {Frame f = new Frame("Border Layout");Button bn = new Button("BN");Button bs = new Button("BS");Button bw = new Button("BW");Button be = new Button("BE");Button bc = new Button("BC");f.add(bn, BorderLayout.NORTH);f.add(bs, BorderLayout.SOUTH);f.add(bw, BorderLayout.WEST);f.add(be, BorderLayout.EAST);f.add(bc, BorderLayout.CENTER);f.setSize(600,300);f.setVisible(true);}}

import java.awt.*;public class TestGridLayout {   public static void main(String[] args) {   Frame f = new Frame("GridLayout");   for(int i = 0; i < 6; i++) {   f.add(new Button("b" + i));   }   f.setLayout(new GridLayout(3, 2));   f.pack();   f.setVisible(true);   }}