Web Reference: Mar 26, 2026 · In this article, you will learn various Java approaches to check the sign of a given number, from basic conditional statements to more advanced utility methods. Problem Statement Many programming tasks require conditional execution based on whether a numerical input is positive, negative, or zero. Jan 22, 2026 · Explanation: The method checkPosNeg () determines whether a number is positive or negative. The right shift operator (val >> 31) extracts the sign bit of the integer. For positive numbers, the sign bit is 0; for negative numbers, it is 1. The expression & 1 ensures the result is either 0 or 1. In this program, you'll learn to check whether a given number is positive or negative. This is done by using a if else statement in Java.
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