java GUI编程之布局控制器（Layout）实例分析

import java.awt.*;
public class TestLayout {
 public static void main(String[] args) {
 Frame f = new Frame();
 Button b1 = new Button("ok");
 Button b2 = new Button("open");
 Button b3 = new Button("change");
 f.setBackground(Color.BLUE);
 f.setBounds(100, 100, 300, 300);
 f.setLayout(new FlowLayout());
 f.setResizable(true);
 f.add(b1);
 f.add(b2);
 f.add(b3);
 f.setVisible(true);
 }
}

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 be = new Button("Be");
 Button bw = new Button("Bw");
 Button bc = new Button("Bc");
 
// f.add(bw,"West");
// f.add(be,"East");
// f.add(bn,"North");
// f.add(bs,"South");
// f.add(bc,"Center");
// f.setLayout(new BordorLayout());
 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(200, 200);
 f.setVisible(true);
 }
}

import java.awt.*;
public class TestGridLayout {
 public static void main(String[] args) {
 Frame f = new Frame();
 Button b1 = new Button("b1");
 Button b2 = new Button("b2");
 Button b3 = new Button("b3");
 Button b4 = new Button("b4");
 Button b5 = new Button("b5");
 Button b6 = new Button("b6");
 f.setLayout(new GridLayout(3,2));
 
 f.add(b1);
 f.add(b2);
 f.add(b3);
 f.add(b4);
 f.add(b5);
 f.add(b6);
 f.pack();
 f.setSize(200, 200);
 f.setVisible(true);
 }
}

import java.awt.*;
public class TestedLayout {
 public static void main(String[] args) {
 Frame f = new Frame("GUI");
 f.setLayout(new GridLayout(2,1));
 Panel p1 = new Panel(new BorderLayout());
 Panel p2 = new Panel(new BorderLayout());
 Panel p11 = new Panel(new GridLayout(2,1));
 Panel p22 = new Panel(new GridLayout(2,2));
 Button b1 = new Button("button");
 Button b2 = new Button("button");
 Button b3 = new Button("button");
 Button b4 = new Button("button");
 Button b5 = new Button("button");
 Button b6 = new Button("button");
 Button b7 = new Button("button");
 Button b8 = new Button("button");
 Button b9 = new Button("button");
 Button b10 = new Button("button");
 p1.add(b1,BorderLayout.WEST);
 p1.add(b2,BorderLayout.EAST);
 p2.add(b3,BorderLayout.WEST);
 p2.add(b4,BorderLayout.EAST);
 p11.add(b5);
 p11.add(b6);
 p22.add(b7);
 p22.add(b8);
 p22.add(b9);
 p22.add(b10);
 p1.add(p11,BorderLayout.CENTER);
 p2.add(p22,BorderLayout.CENTER);
 f.add(p1);
 f.add(p2);
 f.setBounds(100, 100, 400, 400);
 f.setVisible(true);
 
 }
}