如何將整數放入Java範圍內？

Question

雖然我確信這個答案很簡單，但我不確定是否有人問我這個任務。這是我寫的完整代碼（所以才一回！），以及被賦予了指令：在粘貼

package code; 

/** 
* This class contains a variety of methods that will be used throughout the Ratings and Reviews 
* project. 
*/ 

public class Utilities{ 

/** 
* Computes the average of two ratings 
* 
* @param rating0 An integer rating in the range of 1-5 inclusive 
* @param rating1 An integer rating in the range of 1-5 inclusive 
* @return the average of rating0 and rating1 as a double 
*/ 
public double averageRating(int rating0, int rating1){ 

    return ((rating0 + rating1)/2); // Don't forget to replace this return statement with your own 
} 

對不起壞結構。我認爲我的回報適合正在進行的工作，前提是評級可能只是任何事情。不過，我知道它只能在1-5之間，那麼如何指定呢？

Answer 1

如果範圍被侵犯，扔InvalidArgumentException怎麼樣？

例如

public double averageRating(int rating0, int rating1){ 
    if (rating0 < 1 || rating0 > 5 || rating1 < 1 || rating1 > 5) { 
     throw new InvalidArgumentException("Rating out of range"); 
    } 

    return ((rating0 + rating1)/2.0); // Don't forget to replace this return statement with your own 
}