/*    范例名称：Frame 应用举例
 *     源文件名称：TestFrame.java
 *    要  点：Frame组件的创建及显示设置
 */

import java.awt.*;
public class TestFrame {
    public static void main( String args[]) {
        Frame f = new Frame("My First Test");
        f.setLocation(300, 300);
        f.setSize( 170,100);
        f.setBackground( Color.blue);
        f.setResizable(false);
        f.setVisible( true);
    }
}

import java.awt.*;

public class TestMultiFrame {
    public static void main(String args[]) {
        MyFrame f1 = 
            new MyFrame(100,100,200,200,Color.BLUE);
        MyFrame f2 = 
            new MyFrame(300,100,200,200,Color.YELLOW);
        MyFrame f3 = 
            new MyFrame(100,300,200,200,Color.GREEN);
        MyFrame f4 = 
            new MyFrame(300,300,200,200,Color.MAGENTA);
    }
}




class MyFrame extends Frame{
    static int id = 0;
    MyFrame(int x,int y,int w,int h,Color color){
        super("MyFrame " + (++id));
        setBackground(color);
        setLayout(null);
        setBounds(x,y,w,h);
        setVisible(true);
    }
}

import java.awt.*;

public class TestPanel {
     public static void main(String args[]) {
              Frame f = 
             new Frame("Java Frame with Panel");
         Panel p = new Panel(null);
         f.setLayout(null);
         f.setBounds(300,300,500,500);
         f.setBackground(new Color(0,0,102));
         p.setBounds(50,50,400,400);
         p.setBackground(new Color(204,204,255));
         f.add(p);
         f.setVisible(true);
    }
}

import java.awt.*;

public class TestMultiPanel {
    public static void main(String args[]) {
        new MyFrame2("MyFrameWithPanel",300,300,400,300);
    }
}


class MyFrame2 extends Frame{
    private Panel p1,p2,p3,p4;
    MyFrame2(String s,int x,int y,int w,int h){
        super(s);
        setLayout(null);
        p1 = new Panel(null); p2 = new Panel(null);
        p3 = new Panel(null); p4 = new Panel(null);
        p1.setBounds(0,0,w/2,h/2);
        p2.setBounds(0,h/2,w/2,h/2);
        p3.setBounds(w/2,0,w/2,h/2);
        p4.setBounds(w/2,h/2,w/2,h/2);
        p1.setBackground(Color.BLUE);
        p2.setBackground(Color.GREEN);
        p3.setBackground(Color.YELLOW);
        p4.setBackground(Color.MAGENTA);
        add(p1);add(p2);add(p3);add(p4);
        setBounds(x,y,w,h);
        setVisible(true);
    }
}

import java.awt.*;

public class CenterPanel {
  public static void main(String args[]) {
    new MyFrame3(300,300,400,300,Color.BLUE);
  }
}

class MyFrame3 extends Frame{
  private Panel p;
  MyFrame3(int x,int y,int w,int h,Color c){
    super("FrameWithPanel");
    setLayout(null);
    setBounds(x,y,w,h);
    setBackground(c);
    p = new Panel(null); 
    p.setBounds(w/4,h/4,w/2,h/2);
    p.setBackground(Color.YELLOW);
    add(p);
    setVisible(true);
  }
}

/*    范例名称：FlowLayout 用法举例
 *     源文件名称：TestFlowLayout.java
 *    要  点：
 *        1. 布局管理器的概念和作用
 *       2. FlowLayout的性质及用法
 */

import java.awt.*;

public class TestFlowLayout {
    public static void main(String args[]) {
                 Frame f = new Frame("Flow Layout");
        Button button1 = new Button("Ok");
        Button button2 = new Button("Open");
        Button button3 = new Button("Close");
        f.setLayout(new FlowLayout(FlowLayout.LEFT));
        f.add(button1);
        f.add(button2);
        f.add(button3);
        f.setSize(100,100);
        f.setVisible(true);
    }
}

import java.awt.*;
public class TestFlowLayout2 {
    public static void main(String args[]) {
        Frame f = new Frame("Java Frame");
        FlowLayout l = 
            new FlowLayout(FlowLayout.CENTER, 20, 40);
        f.setLayout(l); 
        f.setLocation(300,400);
        f.setSize(300,200);
        f.setBackground(new Color(204,204,255));
        for(int i = 1; i<=7; i++){
            f.add(new Button("BUTTON"));
        }
        f.setVisible(true);
    }
}

/*    范例名称：BorderLayout应用举例
 *     源文件名称：TestBorderLayout.java
 *    要  点：FlowLayout布局管理器的性质及用法
 */

import java.awt.*;
public class TestBorderLayout {
    public static void main(String args[]) {
        Frame f;
        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, "North");
        f.add(bs, "South");
        f.add(bw, "West");
        f.add(be, "East");
        f.add(bc, "Center");
        
        
        // 也可使用下述语句
        /*
        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);
    }
}

/*    范例名称：GridLayout应用举例
 *     源文件名称：TestGridLayout
 *    要  点：GridLayout布局管理器的性质及用法
 */

import java.awt.*;
public class TestGridLayout {
    public static void main(String args[]) {
        Frame f = new Frame("GridLayout Example");
        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.setVisible(true);
    }
}

import java.awt.*;
public class TenButtons {
  public static void main(String args[]) {
    Frame f = new Frame("Java Frame");
    f.setLayout(new GridLayout(2,1)); 
    f.setLocation(300,400);
    f.setSize(300,200);
    f.setBackground(new Color(204,204,255));
    Panel p1 = new Panel(new BorderLayout());
    Panel p2 = new Panel(new BorderLayout());
    Panel p11 = new Panel(new GridLayout(2,1));
    Panel p21 = new Panel(new GridLayout(2,2));
    p1.add(new Button("BUTTON"),BorderLayout.WEST);
    p1.add(new Button("BUTTON"),BorderLayout.EAST);
    p11.add(new Button("BUTTON"));
    p11.add(new Button("BUTTON"));
    p1.add(p11,BorderLayout.CENTER);
    p2.add(new Button("BUTTON"),BorderLayout.WEST);
    p2.add(new Button("BUTTON"),BorderLayout.EAST);
    for(int i =1;i<=4;i++) {p21.add(new Button("BUTTON"));} 
    p2.add(p21,BorderLayout.CENTER);
    f.add(p1);f.add(p2);
    f.setVisible(true);
  }
}