A practical guide to flipping bits of an integer in Java, covering both full 32-bit flipping and significant-bit-only flipping. Explains the bitwise NOT operator (~), mask-based XOR and AND approaches using Integer.numberOfLeadingZeros() and Integer.highestOneBit(), and alternative methods like arithmetic negation (-n-1) and XOR with -1. Includes JUnit 5 test examples and explains the two's complement implications of each approach.
Table of contents
1. Overview2. Understanding Bit Flipping3. Using the Bitwise NOT Operator4. Flipping Only the Significant Bits5. Alternative Methods6. ConclusionSort: