getFields()与getDeclaredFields()区别

getFields()与getDeclaredFields()区别 博客分类：java Java代码 1 1.package study.reflection; 2 2. 3 3.public class People 4 4.public String name = null; 5 5.private String sex = null; 6 6.private String age = null; 7 7.private String tel = null; 8 8.private String address = null; 9 9.public static String s = null; 10 10.static 11 11. System.out.println(loading People); 12 12. 13 13. 14 14.public static void showPeople() 15 15. 16 16. 17 17. 18 18.public People(String name) 19 19. = name; 20 20. 21 21. 22 22.private People() 23 23. = name; 24 24. 25 25. 26 26.private void showPeopleInfo() 27 27. System.out.println(name + + sex + + age + + tel + 28 28. + address); 29 29. 30 30. 31 31.public String getName() 32 32. return name; 33 33. 34 34. 35 35.public void setName(String name) 36 36. = name; 37 37. 38 38. 39 39.public String getSex() 40 40. return sex; 41 41. 42 42. 43 43.public void setSex(String sex) 44 44. this.sex = sex; 45 45. 46 46. 47 47.public String getAge() 48 48. return age; 49 49. 50 50. 51 51.public void setAge(String age) 52 52. this.age = age; 53 53. 54 54. 55 55.public String getTel() 56 56. return tel; 57 57. 58 58. 59 59.public void setTel(String tel) 60 60. this.tel = tel; 61 61. 62 62. 63 63.public String getAddress() 64 64. return address; 65 65. 66 66. 67 67.public void setAddress(String address) 68 68. this.address = address; 69 69. 70 70. 71 71. 72 72. 73 73.package esg; 74 74. 75 75.import java.lang.reflect.Constructor; 76 76.import java.lang.reflect.Field; 77 77.import java.lang.reflect.Method; 78 78. 79 79.import study.reflection.People; 80 80. 81 81.public class Esg 82 82. 83 83.public static void main(String a) throws ClassNotFoundException 84 84. Class c1 = People.class; 85 85. 86 86. Field fs = c1.getFields(); 87 87. System.out.println(*getFields()*); 88 88. for (int i = 0; i fs.length; i+) 89 89. System.out.println(fsi.getName(); 90 90. 91 91. System.out.println(*getDeclaredFields()*); 92 92. fs = c1.getDeclaredFields(); 93 93. for (int i = 0; i fs.length; i+) 94 94. System.out.println(fsi.getName(); 95 95. 96 96. System.out.println(*getMethods()*); 97 97. Method md = c1.getMethods(); 98 98. for (int i = 0; i md.length; i+) 99 99. System.out.println(mdi.getName(); 100 100. 101 101. System.out.println(*getDeclaredMethods()*); 102 102. md = c1.getDeclaredMethods(); 103 103. for (int i = 0; i md.length; i+) 104 104. System.out.println(mdi.getName(); 105 105. 106 106. 107 107. System.out.println(*getConstructors()*); 108 108. Constructor con = c1.getConstructors(); 109 109. for (int i = 0; i con.length; i+) 110 110. System.out.println(coni.getName(); 111 111. 112 112. System.out.println(*getDeclaredConstructors()*); 113 113. con = c1.getDeclaredConstructors(); 114 114. for (int i = 0; i con.length; i+) 115 115. System.out.println(coni.getName(); 116 116. 117 117. 118 118. * getFields()与getDeclaredFields()区别:getFields()只能访问类中声明为公有的字段,私有的字段它无法访问.getDeclaredFields()能访问类中所有的字段,与public,private,protect无关 * getMethods()与getDeclaredMethods()区别:getMethods()只能访问类中声明为公有的方法,私有的方法它无法访问,能访问从其它类继承来的公有方法.getDeclaredFields()能访问类中所有的字段,与public,private,protect无关