java.lang.ArithmeticException: / 为零
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java.lang.ArithmeticException: / by zero
提问by Adway Dhillon
I'm getting this error in this line of code:
我在这行代码中收到此错误：
for (int i = Math.abs(key.hashCode()) % size; i < size; i++)
why is this happening?
为什么会这样？
采纳答案by Jason
The % operator returns the remainder after dividing the first number by the second number. If the second number (in your example size) is zero, then you will get a divide by zero ArithmeticException.
% 运算符返回第一个数字除以第二个数字后的余数。如果第二个数字（在您的示例中size）为零，那么您将得到除以零ArithmeticException。
The key is to check if sizeis zero before performing this loop, and take the appropriate action.
关键是size在执行此循环之前检查是否为零，并采取适当的措施。
