1、1. import java.awt.*;2. import java.awt.event.*;3. import java.text.SimpleDateFormat;4. import java.util.Calendar;5. import java.util.Date;6. import javax.swing.*;7. 8. /*9. * 日期計算器10. * 11. * author Cyin12. * author Lee13. * author YOYO14. * author Skittles15. * 16. * since 2008-11-2417. * version

2、0.118. * 19. */20. public class DateCalculator extends JFrame 21. 22. /*23. * 主面板24. */25. JPanel context = new JPanel();26. 27. /*28. * 三個子面板29. */30. JPanel displayPanel = new JPanel();31. JPanel numPanel = new JPanel();32. JPanel opPanel = new JPanel();33. 34. /*35. * 結(jié)果文本框36. */37. JTextField re

3、sult = new JTextField(0,20);38. 39. /*40. * 主要按鈕41. */42. JButton btnCE = new JButton(CE);43. JButton btnPlus = new JButton(+);44. JButton btnMinus = new JButton(-);45. JButton btnEqu = new JButton(=);46. JButton btnX = new JButton(/);47. 48. /*49. * 是否在輸入日期或天數(shù)狀態(tài)的標記50. */51. boolean inputing = false

4、;52. 53. /*54. * 是否在進行+-操作的標記55. */56. boolean plus = false;57. 58. /*59. * 是否在進行-操作的標記60. */61. boolean minus = false;62. 63. /*64. * 當前日期65. */66. Calendar calendar = Calendar.getInstance();67. 68. /*69. * 鍵盤監(jiān)聽器70. */71. KeyboardListener keyListener = new KeyboardListener();72. 73. /*74. * 按鈕監(jiān)聽器75

5、. */76. ButtonActionListener btnListener = new ButtonActionListener();77. 78. /*79. * 構造器80. */81. public DateCalculator()82. this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);83. this.setSize(260,220);84. this.setTitle(日期計算器); 85. this.setResizable(false);86. 87. this.setLayout(new FlowLayout();8

6、8. this.add(context);89. 90. initWindow();91. 92. this.setVisible(true);93. 94. 95. /*96. * 初始化窗體97. */98. private void initWindow()99. context.setLayout(new BorderLayout(10,10);100. 101. / 顯示面板102. displayPanel.setLayout(new FlowLayout(FlowLayout.CENTER);103. displayPanel.add(result);104. result.se

7、tHorizontalAlignment(JTextField.RIGHT);105. result.setFocusable(false);106. context.add(displayPanel,North);107. 108. / 數(shù)字面板109. numPanel.setLayout(new GridLayout(4,3,5,5);110. for(int i=1;i=0&ch=9|ch=/)353. pressButton(String.valueOf(ch);354. 355. if(ch=)356. pressEqualButton();357. 358. if(ch=+|ch=-)359. pressOPButton(String.valueOf(ch);360. 361. 362. 363. 364. 365. 366. /*367. * 入口方法368. * param args369. */370