public class User{
//定义属性用户名、密码
private String user_name;
private String password;

public User(String user_name, String password){
    
    setUser_name(user_name);
    setPassword(password);
    
}

public void setUser_name(String user_name){
    this.user_name=user_name;
}
public String getUser_name(){
    return this.user_name;
}


public void setPassword(String password){
    this.password=password;
}
public String getPassword(){
    return this.password;
}

}

相关代码：

public class User{
    //定义属性用户名、密码
    private String user_name;
    private String password;
    
    public User(String user_name, String password){
        
        setUser_name(user_name);
        setPassword(password);
        
    }
    
    public void setUser_name(String user_name){
        this.user_name=user_name;
    }
    public String getUser_name(){
        return this.user_name;
    }
    
    
    public void setPassword(String password){
        this.password=password;
    }
    public String getPassword(){
        return this.password;
    }
    
    
}
### 相关代码：

public class Test{
// 测试方法
public static void main(String[] args) {
//实例化对象，调用相关方法实现运行效果
User one=new User(“Lucy”,“123456”);
User two=new User(“Mike”,“123456”);

 UserManager manage=new UserManager();
 
 System.out.println("用户名："+one.getUser_name());
 System.out.println("密码:"+one.getPassword());
 System.out.println("用户名："+two.getUser_name());
 System.out.println("密码:"+two.getPassword());
 System.out.println("===========================");
 System.out.println(manage.checkUser(one,two));
}

}