オブジェクト指向エクササイズのアクセサ禁止

1.java

// これはNG

public class User {

  private String name;
  private int age;

  public User(String name, int age) {
    this.name = name;
    this.age = age;
  }

  public String getName() {return name;}
  public int getAge() {return age;}

}
public class UserFinder {

  public static void main(String[] args) {
    User user = UserRepository.findByName(args[0]);
    System.out.format("User(name=%s, age=%d)\n", user.getName(), user.getAge());
  }

}

2.java

// こういう風にしろ

public class User {

  private String name;
  private int age;

  public User(String name, int age) {
    this.name = name;
    this.age = age;
  }

  public void display(PrintStream out) {
    out.format("User(name=%s, age=%d)\n", user.getName(), user.getAge());
  }

}
public class UserFinder {

  public static void main(String[] args) {
    User user = UserRepository.findByName(args[0]);
    user.display(System.out)
  }

}

てｓｔ

test

testtest

test

test

もっかいテスト

test