Java – How to convert byte arrays to Hex
This article shows you a few ways to convert byte arrays or byte to a hexadecimal (base 16 or hex) string representative. String.format, Integer.toHexString, Apache Commons Codec – commons-codec, Spring…
Java Sign Extension
The sign extension is an operation of increasing the bits while preserves the number’s sign (positive and negative). The Sign extension fills the increased bits with the original of the…
Java >> and >>> bitwise shift operators
In programming, bitwise shift operators, >> means arithmetic right shift, >>> means logical right shift, the differences: >>, it preserves the sign (positive or negative numbers) after right shift by…
Java SHA-256 and SHA3-256 Hashing Example
In Java, we can use MessageDigest to get a SHA-256 or SHA3-256 hashing algorithm to hash a string. This article shows how to use Java SHA-256 and SHA3-256 algorithms to…