这个程序是我做复杂了还是本来就这么复杂啊？求指导！！

package com.imooc.user;

public class User {

private String name1;

private String code1;

private String name2;

private String code2;

public User(String name1,String code1,String name2,String code2){

this.setCode(code1);

this.setCode2(code2);

this.setName(name1);

this.setName2(name2);

}

public String getName() {

return name1;

}

public void setName(String name1) {

this.name1 = name1;

}

public String getCode() {

return code1;

}

public void setCode(String code1) {

this.code1 = code1;

}

public String getName2() {

return name2;

}

public void setName2(String name2) {

this.name2 = name2;

}

public String getCode2() {

return code2;

}

public void setCode2(String code2) {

this.code2 = code2;

}

}

*********************************************

package com.imooc.user;

public class UserManager {

public void contrast(String name1,String code1,String name2,String code2){

if(name1.equals(null)||name2.equals(null)){

System.out.println("输入值有空值！");

}

System.out.println("用户名："+name1);

System.out.println("密码："+code1);

System.out.println("用户名："+name2);

System.out.println("密码："+code2);

System.out.println("================");

if(name1!=name2)

System.out.println("用户名不一致");

}

}

*************************************************************

package com.imooc.user;

public class Test {

public static void main(String[] args) {

User obj=new User("Lucy","123456","Mike","123456");

        UserManager obj2=new UserManager();

       obj2.contrast(obj.getName(), obj.getCode(), obj.getName2(), obj.getCode2());

}

}