缺少for循环中的if语句中的return语句[重复]

Question

发生的问题是错误是“缺少返回语句”；我该如何解决这个问题？代码的实际要点是将所有同伴的余额以及余额加在一起，然后看看是否足够放假。 我还声明了另一个名为

的字段变量

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 没有任何东西可以迭代（比如数组是空的），那么它根本不会执行。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
}