java复写equals例子

public class users {
    String name;
    static int age;
    public boolean equals(Object obj) {
        if(this==obj){
            return true;
        }
        boolean b=obj instanceof users;
        if(b){
            users u=(users)obj;
            if(users.age==u.age&&this.name.equals(u.name)){
                return true;
            }
            else {
                return false;
            }
        }
        else {
            return false;
        }
    }
    public static void main(String[] args) {
        users  u1=new users();
        users u2=new users();
        users u3=u1;
        u1.name="zhangsan";
        u1.age=11;
        u2.name="zhangsan";
        u1.age=11;
        System.out.println(u1.equals(u2));
    }
}