还有什么地方可以改进

Question

package one;public class User { private String name; private String password;  public User(String name,String password) {  this.name = name;  this.password = password; } public String getName() {  return name; } public void setName(String name) {  this.name = name; } public String getPassword() {  return password; } public void setPassword(String password) {  this.password = password; } public void print() {  System.out.println("用户名："+name);  System.out.println("密码："+password); }  }分割线------------------------------------------------------------------------------------------------------------package one;//管理类public class UserManager {  public void check(User one ,User two) {   if(one.getName()==two.getName()) {    System.out.println(" ");   }   if(one.getName()!=two.getName()) {    System.out.println("用户名不一致！");   }   if(one.getPassword()==two.getPassword()) {    System.out.println("  ");   }         if(one.getPassword()!=two.getPassword()) {    System.out.println("密码不一致！");   }    } }//为什么无法判断  （提问）//私有变量使用简化  （回顾）//简化主方法代码  （进化）分割线------------------------------------------------------------------------------------------------------------package one;public class Test {  public static void main(String[] args) {    User one = new User("花花","123456");  User two = new User("凡凡","123456");    one.print();  two.print();    System.out.println("===============");  UserManager n = new UserManager();     n.check(one, two);      //System.out.println(); }}效果图用户名：花花密码：123456用户名：凡凡密码：123456===============用户名不一致！

Answer 1

字符串比较实用equals, UserManager中姓名和密码比较写法错误。 比较时还需要判空。