1. public class Users {
    2.     private String username;
    3.     private int userage;
    5.     public String getUsername() {
    6.         return username;
    7.     }
    9.     public void setUsername(String username) {
    10.         this.username = username;
    11.     }
    13.     public int getUserage() {
    14.         return userage;
    15.     }
    17.     public void setUserage(int userage) {
    18.         this.userage = userage;
    19.     }
    20. }
    1. public class GetClass_1 {
    2.     public static void main(String[] args) {
    3.         Users users = new Users();
    4.         Class clazz=users.getClass();
    5.         Class clazz_1=users.getClass();
    7.         System.out.println(clazz);
    8.         System.out.println(clazz_1);
    9.         System.out.println(clazz.getName());
    10.         System.out.println(clazz==clazz_1);
    11.     }
    12. }

    image.png

    1. public class GetClass_2 {
    2.     public static void main(String[] args) {
    3.         Class clazz_1 = Users.class;
    4.         Class clazz_2 = Users.class;
    6.         System.out.println(clazz_1);
    7.         System.out.println(clazz_1.getName());
    8.         System.out.println(clazz_1==clazz_2);
    9.     }
    10. }

    image.png

    1. /**
    2. 可以看到forName()方法与上面2个方法不同的是，forName()属于Class类，而上面2个属于对象
    3. */
    4. public class GetClass_3 {
    5.     public static void main(String[] args) throws ClassNotFoundException {
    6.         Class clazz_1 = Class.forName("Reflict.Users");
    7.         Class clazz_2 = Class.forName("Reflict.Users");
    8.         System.out.println(clazz_1);
    9.         System.out.println(clazz_2);
    10.         System.out.println(clazz_1==clazz_2);
    11.     }
    12. }