java/53_BorderLayout at main · PeiHui369/java · GitHub

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
//Layout Manager = Defines the natural layout for components within a container
//3 common managers
//BorderLayout = A BorderLayout places components in five areas: NORTH, SOUTH, WEST, EAST, CENTER
//               All extra space is placed in the center area

import javax.swing.*;
import java.awt.*;

public class Main{
    public static void main(String[] args){
        JFrame frame = new JFrame();
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.setSize(500,500);
        frame.setLayout(new BorderLayout(10,10));//margin: empty space between panel
        frame.setVisible(true);

        JPanel panel1 = new JPanel();
        JPanel panel2 = new JPanel();
        JPanel panel3 = new JPanel();
        JPanel panel4 = new JPanel();
        JPanel panel5 = new JPanel();

        panel1.setBackground(Color.red);
        panel2.setBackground(Color.green);
        panel3.setBackground(Color.yellow);
        panel4.setBackground(Color.magenta);
        panel5.setBackground(Color.blue);

        panel1.setPreferredSize(new Dimension(100,50));
        panel2.setPreferredSize(new Dimension(100,100));
        panel3.setPreferredSize(new Dimension(100,100));
        panel4.setPreferredSize(new Dimension(100,100));
        panel5.setPreferredSize(new Dimension(100,100));

        //--------------------sub panels--------------------------------

        JPanel panel6 = new JPanel();
        JPanel panel7 = new JPanel();
        JPanel panel8 = new JPanel();
        JPanel panel9 = new JPanel();
        JPanel panel10 = new JPanel();

        panel6.setBackground(Color.black);
        panel7.setBackground(Color.darkGray);
        panel8.setBackground(Color.gray);
        panel9.setBackground(Color.lightGray);
        panel10.setBackground(Color.white);

        panel5.setLayout(new BorderLayout()); //panel 6,7,8,9,10 within panel5

        panel6.setPreferredSize(new Dimension(50,50));
        panel7.setPreferredSize(new Dimension(50,50));
        panel8.setPreferredSize(new Dimension(50,50));
        panel9.setPreferredSize(new Dimension(50,50));
        panel10.setPreferredSize(new Dimension(50,50));

        panel5.add(panel6, BorderLayout.NORTH);
        panel5.add(panel7, BorderLayout.SOUTH);
        panel5.add(panel8, BorderLayout.WEST);
        panel5.add(panel9, BorderLayout.EAST);
        panel5.add(panel10, BorderLayout.CENTER);
        //---------------------sub panels-----------------------------
        frame.add(panel1, BorderLayout.NORTH);
        frame.add(panel2, BorderLayout.WEST);
        frame.add(panel3, BorderLayout.EAST);
        frame.add(panel4, BorderLayout.SOUTH);
        frame.add(panel5, BorderLayout.CENTER);

    }
}