On Tue, 20 May 2025 21:53:21 GMT, Shaojin Wen <s...@openjdk.org> wrote:
>> src/java.base/share/classes/java/util/UUID.java line 528: >> >>> 526: * <pre> >>> 527: * Input: 0x0123456789ABCDEF >>> 528: * Output: 0x3031323334353637 ('0','1','2','3','4','5','6','7' in >>> ASCII) >> >> Only the low 32 bits are used, the example only needs to show the input ox >> 0x0123457. >> Or change the signature to accept an `int`. > > Because the input of Long.expand is long, if the parameter is int, it will > cause a redundant conversion process of long -> int -> long. I think the issue is just the example input and output should be something like: Input: 0xABCDEF01 Output: 0x3130666564636261 to demonstrate that it is the low-order bits that are used, as well as that the digit order is reversed in the result. ------------- PR Review Comment: https://git.openjdk.org/jdk/pull/22928#discussion_r2099071960