Throw exception on numeric overflow

Question

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;

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

sol4me · Accepted Answer · 2015-05-01T13:42:55.850

14

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);

edited May 01 '15 at 13:42

answered May 01 '15 at 13:10

sol4me

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@Trobbins Hope this time its fixed :) – sol4me May 01 '15 at 13:43
Why not check if the next value would cause overflow? `if (x > Integer.MAX_VALUE - 1) { throw new Exception("Overflow"); }` – Jabari Dash May 09 '18 at 10:08

Throw exception on numeric overflow

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