Range check

Range check

In computer programming, a range check is a check to make sure a number is within a certain range. This is often used with arrays, as using a number outside of the upper range in an array may cause the program to crash, or may introduce security vulnerabilities (see buffer overflow). In Java, the interpreter automatically does a range-check when items in an array are accessed, and throws an exception if the item is out of range. See bounds checking.

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