java 图形化界面 布局管理器

 1 package Layout;
 2 import java.awt.*;
 3 import javax.swing.*;
 4 public class MyBorderLayout extends JFrame{
 5     private JButton b1 = new JButton("东");
 6     private JButton b2 = new JButton("南");
 7     private JButton b3 = new JButton("西");
 8     private JButton b4 = new JButton("北");
 9     private JButton b5 = new JButton("中");
10 public MyBorderLayout(){
11
12     setTitle("用户界面");
13     setSize(500, 500);
14     setLocation(100, 100);
15     add(b1,BorderLayout.EAST);
16     add(b2,BorderLayout.SOUTH);
17     add(b3,BorderLayout.WEST);
18     add(b4,BorderLayout.NORTH);
19     add(b5,BorderLayout.CENTER);
20
21     setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
22     setVisible(true);
23 }
24
25
26     public static void main(String[] args) {
27     MyBorderLayout l = new MyBorderLayout();
28
29     }
30
31 }

 1 package Layout;
 2 import java.awt.*;
 3 import java.util.HashMap;
 4 import java.util.Map;
 5
 6 import javax.swing.*;
 7 public class MyFlowLayout extends JFrame{
 8     private  Map<String,JButton> map = new HashMap();
 9     private  JButton b = new JButton();
10    public MyFlowLayout(){
11        map.put("B1",new JButton("B1"));
12        map.put("B2",new JButton("B2"));
13        map.put("B3",new JButton("B3"));
14        map.put("B4",new JButton("B4"));
15        map.put("B5",new JButton("B5"));
16        this.setLayout(new FlowLayout());
17     //   this.setLayout(new FlowLayout(FlowLayout.LEFT));
18     //   this.setLayout(new FlowLayout(FlowLayout.RIGHT));
19        this.add(map.get("B1"));
20        this.add(map.get("B2"));
21        this.add(map.get("B3"));
22        this.add(map.get("B4"));
23        this.add(map.get("B5"));
24        this.setTitle("用户界面");
25        this.setSize(500, 400);
26        this.setLocation(400, 500);
27        this.setVisible(true);
28    }
29
30
31     public static void main(String[] args) {
32
33          MyFlowLayout l = new MyFlowLayout();
34     }
35
36 }

 1 package Layout;
 2 import java.awt.*;
 3 import java.util.HashMap;
 4 import java.util.Map;
 5 import javax.swing.*;
 6 public class MyGridLayout extends JFrame {
 7     private  Map<String,JButton> map = new HashMap();
 8     public MyGridLayout (){
 9
10                map.put("B1",new JButton("B1"));
11                map.put("B2",new JButton("B2"));
12                map.put("B3",new JButton("B3"));
13                map.put("B4",new JButton("B4"));
14                map.put("B5",new JButton("B5"));
15                map.put("B6",new JButton("B6"));
16                map.put("B7",new JButton("B7"));
17                map.put("B8",new JButton("B8"));
18                map.put("B9",new JButton("B9"));
19                this.add(map.get("B1"));
20                this.add(map.get("B2"));
21                this.add(map.get("B3"));
22                this.add(map.get("B4"));
23                this.add(map.get("B5"));
24                this.add(map.get("B6"));
25                this.add(map.get("B7"));
26                this.add(map.get("B8"));
27                this.add(map.get("B9"));
28
29                this.setTitle("用户界面");
30                this.setSize(500, 600);
31                this.setLocation(500, 500);
32                this.setVisible(true);
33               this.setLayout(new GridLayout(3,3,15,15));
34
35     }
36     public static void main(String[] args) {
37     MyGridLayout l = new MyGridLayout();
38
39     }
40
41 }