缺少if语句中的return语句，该语句位于for循环中[duplicate]

Question

这个问题在这里已有答案：

• Beginners Java (Loops) - Missing return statement 4个答案

发生的问题是错误是“缺少return语句”;我该如何解决这个问题？代码的实际要点是将所有伴侣的余额和余额相加，然后查看它是否足以满足假期。我还声明了另一个字段变量

private int every1nzBalance;

public boolean checkMoney(Holiday holiday) 
{



    // For each friend i.e in the list

    for(Friend friend:companions)
    {
        if(friend.getMoney()+ balance>=holiday.getPrice())
        {

         System.out.println("You including your friends have sufficient funds to pay for the"+holiday+" holiday.");

         return true;
        }

        else

        {
            System.out.println("Please ensure that you and your friends have sufficient amount of money for the holiday");

            return false;
        }
      }

    }

Answer 1

这很简单。如果for没有任何迭代（比如数组为空），那么它根本不会执行。您最后需要一个默认的return语句：

private int every1nzBalance;

public boolean checkMoney(Holiday holiday) {

if(companions == null) return false; //also default return

for(Friend friend : companions)
{
    if(friend.getMoney()+ balance>=holiday.getPrice())
    {

     System.out.println("You including your friends have sufficient funds to pay for the"+holiday+" holiday.");

     return true;
    }

    else

    {
        System.out.println("Please ensure that you and your friends have sufficient amount of money for the holiday");

        return false;
    }
  }
  return  false; //default return
}