JDK-8006627 : UUID to/from String performance should be improved by reducing object allocations
  • Type: Enhancement
  • Component: core-libs
  • Sub-Component: java.util
  • Affected Version: 8
  • Priority: P4
  • Status: Resolved
  • Resolution: Fixed
  • Submitted: 2013-01-21
  • Updated: 2019-06-06
  • Resolved: 2014-07-22
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JDK 9
9 b25Fixed
Related Reports
Duplicate :  
JDK-8188902 - UUID.fromString does not work as expected
Relates :  
JDK-8013528 - Provide SharedSecrets access to String(char[], boolean) constructor
Relates :  
JDK-8041972 - Add improved parse methods for Long/Integer
Relates :  
JDK-8007398 - Code sharing for Long.toHexString() toOctalString() and toBinaryString()
Relates :  
JDK-8148936 - Adapt UUID.toString() to Compact Strings
Relates :  
JDK-8225404 - Potential DOS using UUID.fromString
Relates :  
JDK-8159339 - UUID:fromString() parses incorrect strings without error
Sub Tasks
JDK-8173722 :  
Release Note: java.util.UUID#fromString(String) now throws IllegalArgumentException if the parameter is too long - Closed
Description
See original discussion at 
http://mail.openjdk.java.net/pipermail/core-libs-dev/2013-January/013494.html
Comments
Checks on the correctness of the UUID format were added with this fix. Ideally, it should have gone through CCC. I think a release note is valid for such a change. See JDK-8159339 also.
22-06-2016
I rescind my previous comment. Lets just push the remaining work in one patch.
19-07-2014
Remaining work could still be split into two parts-constructor and toString(). I recommend doing toString() part first.
04-10-2013
Webrev at http://dl.dropbox.com/u/1422321/uuid_webrev/index.html
30-01-2013
Fix proposed by Steven Schlansker <steven@likeness.com>
30-01-2013