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一位态度非常认真的学生写的代码

时间：2021-07-01 10:21:17 帮助过：6人阅读

<无详细内容>
  1. package com.qimenguigu.l07131;
  3. import java.io.BufferedReader;
  4. import java.io.IOException;
  5. import java.io.InputStreamReader;
  7. /**
  8. * 输入年，月，日，next|prior，如果是一个正确的日期，算出上一天或下一天
  9. *
  10. * @author Longjie
  11. * @website www.qimenguigu.com
  12. */
  13. public class Title15 {
  14. public static void main(String[] args) throws IOException {
  15. BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
  16. System.out.println("请输入年份");
  17. String s1 = br.readLine();
  18. System.out.println("请输入月份");
  19. String s2 = br.readLine();
  20. System.out.println("请输入日份");
  21. String s3 = br.readLine();
  22. int year = Integer.parseInt(s1);
  23. int month = Integer.parseInt(s2);
  24. int day = Integer.parseInt(s3);
  26. if (year >= 0 && month >= 1 && month <= 12) {
  27. if (month == 1 || month == 3 || month == 5 || month == 7
  28. || month == 8 || month == 10 || month == 12) {
  29. if (day >= 1 && day <= 31) {
  30. System.out.println("您输入的日期为:" + year + "年" + month + "月"
  31. + day + "日");
  32. if (day == 31) {
  33. if (month == 12)
  34. System.out.println("且上一天为：" + year + "年12月"
  35. + (day - 1) + "日" + "," + "下一天为："
  36. + (year + 1) + "年1月1日");
  37. else
  38. System.out.println("且上一天为：" + year + "年" + month
  39. + "月" + (day - 1) + "日" + "," + "下一天为："
  40. + year + "年" + (month + 1) + "月1日");
  41. } else if (day == 1) {
  42. if (month == 1)
  43. System.out.println("且上一天为：" + (year - 1)
  44. + "年12月31日" + "," + "下一天为：" + year + "年"
  45. + month + "月" + (day + 1) + "日");
  46. else if (month == 3) {
  47. if ((year % 4 == 0 && year % 100 != 0)
  48. || (year % 400 == 0))
  49. System.out.println("且上一天为：" + year + "年2月29日"
  50. + "," + "下一天为：" + year + "年" + month
  51. + "月" + (day + 1) + "日");
  52. else
  53. System.out.println("且上一天为：" + year + "年2月28日"
  54. + "," + "下一天为：" + year + "年" + month
  55. + "月" + (day + 1) + "日");
  56. } else
  57. System.out.println("且上一天为：" + year + "年"
  58. + (month - 1) + "月30日" + "," + "下一天为："
  59. + year + "年" + month + "月" + (day + 1)
  60. + "日");
  61. } else
  62. System.out.println("且上一天为：" + year + "年" + month + "月"
  63. + (day - 1) + "日" + "," + "下一天为：" + year + "年"
  64. + month + "月" + (day + 1) + "日");
  65. } else
  66. System.out.println("您输入的日期不合法");
  67. } else if (month == 4 || month == 6 || month == 9 || month == 11) {
  68. if (day >= 1 && day <= 30) {
  69. System.out.println("您输入的日期为:" + year + "年" + month + "月"
  70. + day + "日");
  71. if (day == 30)
  72. System.out.println("且上一天为：" + year + "年" + month + "月"
  73. + (day - 1) + "日" + "," + "下一天为：" + year + "年"
  74. + (month + 1) + "月1日");
  75. else if (day == 1)
  76. System.out.println("且上一天为：" + year + "年" + (month - 1)
  77. + "月31日" + "," + "下一天为：" + year + "年" + month
  78. + (day + 1) + "日");
  79. else
  80. System.out.println("且上一天为：" + year + "年" + month + "月"
  81. + (day - 1) + "日" + "," + "下一天为：" + year + "年"
  82. + month + (day + 1) + "日");
  83. } else
  84. System.out.println("您输入的日期不合法");
  85. } else if ((year % 4 == 0 && year % 100 != 0) || (year % 400 == 0)) {
  86. if (day == 29)
  87. System.out.println("您输入的日期为:" + year + "年" + month + "月"
  88. + day + "日" + "\n" + "且上一天为：" + year + "年2月28日"
  89. + "," + "下一天为：" + year + "年3月1日");
  90. else {
  91. if (day == 28)
  92. System.out.println("您输入的日期为:" + year + "年" + month
  93. + "月" + day + "日" + "\n" + "且上一天为：" + year
  94. + "年2月27日" + "," + "下一天为：" + year + "年2月29日");
  95. else
  96. System.out.println("您输入的日期不合法");
  97. }
  98. }
  99. } else
  100. System.out.println("您输入的日期不合法");
  101. }
  102. }

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