java - 背部。任何 sugReturn 语句打印回 String 且默认 int 为 5。我只希望 String 输出 printgestions？

Question

我们在编程课上学习 oop，这是我们的第一个作业，我遇到的问题是它只应该返回“good”，但我却返回“good 5”。我对这一切还很陌生，希望能得到一些关于如何解决这个问题的建议或提示。

public class Main{
 public static void main(String[] args){
  Dog dog = new Dog();
  System.out.println(dog.checkWeight());
 }
}

//两个独立的文件main.java和Dog.java

public class Dog{
 String name = "unknown";
 String breed = "mutt";
 int weight = 5;
 
 public int checkWeight(){
  if (weight <2){
   System.out.println("under-weight");
  }else if (weight > 10){
   System.out.println("over-weight");
  }else{
   System.out.println("good");
  }return weight;
 }
}

Answer 1

改变checkWeight的定义如下:

public String checkWeight() {
    String health = "";
    if (weight < 2) {
        health = "under-weight";
    } else if (weight > 10) {
        health = "over-weight";
    } else {
        health = "good";
    }
    return health;
}