JAVA大学实用教程实验指导10.2.1答案

P122                   布局                      代码补完

 

 

 

LayoutExample.java

 

 

1. import javax.swing.*;
2. import java.awt.*;
3. import javax.swing.border.*;
5. class MyWin extends JFrame
6. {
7.     JTabbedPane tabbedPane;
8.     JPanel flowLayoutPanel,
9.             gridLayoutPanel,
10.             borderLayoutPanel,
11.             nullLayoutPanel;
12.     Box boxLayoutPanel;
13.     JSplitPane splitPaneOne,splitPaneTwo;
14.     JLayeredPane layeredPane;
15.     public MyWin()
16.     {
17.         JButton b[]=new JButton[35];
18.         for(int i=0;i<b.length;i++)
19.         {
20.             b[i]=new JButton("***");
21.         }
22.         JTextArea text=new JTextArea("大家好");
23.         setBounds(100,100,500,300);
24.         setVisible(true);
25.         tabbedPane=new JTabbedPane(JTabbedPane.LEFT);
26.         FlowLayout flow=new FlowLayout();
27.         flowLayoutPanel=new JPanel();
28.         flow.setAlignment(FlowLayout.LEFT);
29.         flow.setVgap(4);
30.         flow.setHgap(10);
31.         flowLayoutPanel.setLayout(flow);
32.         for(int z=1;z<6;z++)
33.         {
34.             flowLayoutPanel.add(b[z]);
35.         }
36.         tabbedPane.add("观看FlowLayout布局",flowLayoutPanel);
37.         gridLayoutPanel=new JPanel();
38.         GridLayout grid=new GridLayout(2,3);
39.         grid.setVgap(6);
40.         grid.setHgap(8);
41.         gridLayoutPanel.setLayout(grid);
42.         for(int y=6;y<12;y++)
43.         {
44.             gridLayoutPanel.add(b[y]);
45.         }
46.         tabbedPane.add("观看GriderLayout布局",gridLayoutPanel);
47.         borderLayoutPanel=new JPanel();
48.         BorderLayout border=new BorderLayout();
49.         border.setVgap(5);
50.         border.setHgap(7);
51.         borderLayoutPanel.setLayout(border);
52.         borderLayoutPanel.add(b[12],BorderLayout.SOUTH);
53.         borderLayoutPanel.add(b[13],BorderLayout.NORTH);
54.         borderLayoutPanel.add(text,BorderLayout.CENTER);
55.         borderLayoutPanel.add(b[14],BorderLayout.EAST);
56.         borderLayoutPanel.add(b[15],BorderLayout.WEST);
57.         tabbedPane.add("观看BorderLayout布局",borderLayoutPanel);
58.         boxLayoutPanel=Box.createVerticalBox();
59.         for (int x=16;x<22;x++)
60.         {
61.             boxLayoutPanel.add(b[x]);
62.         }
63.         tabbedPane.add("观看BoxLayout布局",boxLayoutPanel);
64.         nullLayoutPanel=new JPanel();
65.         nullLayoutPanel.setLayout(null);
66.         for(int w=22;w<27;w++)
67.         {
68.             nullLayoutPanel.add(b[w]);
69.         }
70.         b[22].setBounds(100,100,60,30);
71.         b[23].setBounds(130,120,60,30);
72.         b[24].setBounds(160,140,60,30);
73.         b[25].setBounds(190,160,60,30);
74.         b[26].setBounds(210,180,60,30);
75.         tabbedPane.add("观看null布局",nullLayoutPanel);
76.         splitPaneOne=new JSplitPane(JSplitPane.VERTICAL_SPLIT,b[27],b[28]);
77.         splitPaneTwo=new JSplitPane(JSplitPane.HORIZONTAL_SPLIT,splitPaneOne,b[29]);
78.         tabbedPane.add("观看JSplit",splitPaneTwo);
79.         layeredPane=new JLayeredPane();
80.         layeredPane.setLayout(null);
81.         layeredPane.add(b[30],JLayeredPane.DEFAULT_LAYER);
82.         layeredPane.add(b[31],JLayeredPane.PALETTE_LAYER);
83.         layeredPane.add(b[32],JLayeredPane.MODAL_LAYER);
84.         layeredPane.add(b[33],JLayeredPane.POPUP_LAYER);
85.         layeredPane.add(b[34],JLayeredPane.DRAG_LAYER);
86.         b[30].setBounds(100,100,60,30);
87.         b[31].setBounds(130,120,60,30);
88.         b[32].setBounds(160,140,60,30);
89.         b[33].setBounds(190,160,60,30);
90.         b[34].setBounds(210,180,60,30);
91.         tabbedPane.add("观看JLayeredPane",layeredPane);
92.         tabbedPane.validate();
93.         Container con=getContentPane();
94.         con.add(tabbedPane,BorderLayout.CENTER);
95.         con.validate();
96.         setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
97.     }
98. }
99. public class LayoutExample
100. {
101.     public static void main(String args[])
102.     {
103.         new MyWin();
104.     }
105. }