在数字溢出时抛出异常 [英] Throw exception on numeric overflow

问题描述

当发生整数溢出而不是静默失败时，是否有可能抛出某种运行时异常。例如。

Is it possible to throw some sort of runtime exception when integer overflow occurs rather then failing silently. For e.g.

int x = 100000000 * 1000000000;

打印 1569325056 由于溢出而我我想要获得某种运行时异常

print 1569325056 due to overflow and what I w'd like is to get some sort of runtime exception

推荐答案

是的，从Java-8开始你可以使用新的< a href =https://docs.oracle.com/javase/8/docs/api/java/lang/Math.html#multiplyExact-int-int->完全方法，会抛出异常溢出时出现（java.lang.ArithmeticException：整数溢出）。例如，

Yes, Starting from Java-8 you can use the new Exact method, it will throw an exception(java.lang.ArithmeticException: integer overflow) on overflow. E.g.

Math.multiplyExact(100000000, 1000000000);

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