Java使用箱式布局管理器

Java使用箱式布局管理器：

1. package com.han;
3. import java.awt.BorderLayout;
4. import java.awt.Container;
5. import javax.swing.Box;
6. import javax.swing.JButton;
7. import javax.swing.JFrame;
8. import javax.swing.JLabel;
9. import javax.swing.JScrollPane;
10. import javax.swing.JTextArea;
11. import javax.swing.JTextField;
13. /**
14. * 使用箱式布局管理器
15. * @author HAN
16. *
17. */
18. public class BoxLayout_1 extends JFrame {
20. /**
21. *
22. */
23. private static final long serialVersionUID = 6896925750596855002L;
25. public BoxLayout_1() {
26. // TODO Auto-generated constructor stub
27. Container container = getContentPane();
28. Box box = Box.createVerticalBox();
29. container.add(box, BorderLayout.NORTH);
30. box.add(Box.createVerticalStrut(5));
31. Box topicBox = Box.createHorizontalBox();
32. box.add(topicBox);
33. topicBox.setAlignmentX(1);
34. topicBox.add(Box.createHorizontalStrut(5));
35. JLabel topicLabel = new JLabel("主題：");
36. topicBox.add(topicLabel);
37. topicBox.add(Box.createHorizontalStrut(5));
38. JTextField topicTextField = new JTextField(30);
39. topicBox.add(topicTextField);
41. Box box2 = Box.createVerticalBox();
42. container.add(box2, BorderLayout.CENTER);
43. Box contentBox = Box.createHorizontalBox();
44. contentBox.setAlignmentX(1);
45. box2.add(Box.createVerticalStrut(5));
46. box2.add(contentBox);
47. contentBox.add(Box.createHorizontalStrut(5));
48. JLabel contentLabel = new JLabel("內容：");
49. contentLabel.setAlignmentY(0);
50. contentBox.add(contentLabel);
51. contentBox.add(Box.createHorizontalStrut(5));
52. StringBuilder stringBuilder = new StringBuilder();
53. String contentString = new String("利用箱式布局管理器實現組件的右對齊" +
54. "和上對齊，以及控制組件之間的間距！");
55. stringBuilder.append(contentString);
56. stringBuilder.append("\n");
57. stringBuilder.append(contentString);
58. contentString = stringBuilder.toString();
59. JTextArea contentTextArea = new JTextArea(contentString, 3, 30);
60. contentTextArea.setLineWrap(true);
61. JScrollPane scrollPane = new JScrollPane();
62. scrollPane.setAlignmentY(0);
63. scrollPane.setViewportView(contentTextArea);
64. contentBox.add(scrollPane);
65. contentBox.add(Box.createHorizontalStrut(5));
66. // System.out.println(contentTextArea.requestFocusInWindow());
67. box2.add(Box.createVerticalStrut(5));
68. JButton submitButton = new JButton("確定");
69. box2.add(submitButton);
70. submitButton.setAlignmentX(1);
71. box2.add(Box.createVerticalStrut(5));
72. }
74. /**
75. * @param args
76. */
77. public static void main(String[] args) {
78. // TODO Auto-generated method stub
79. BoxLayout_1 frame = new BoxLayout_1();
80. frame.setTitle("使用箱式布局管理器");
81. frame.setVisible(true);
82. frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
83. frame.pack();
84. }
86. }