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From "Phil Steitz (JIRA)" <j...@apache.org>
Subject [jira] Commented: (LANG-472) RandomUtils.nextLong() get all even number
Date Thu, 27 Nov 2008 23:12:44 GMT

    [ https://issues.apache.org/jira/browse/LANG-472?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12651431#action_12651431
] 

Phil Steitz commented on LANG-472:
----------------------------------

Just realized that the patch violates / changes the contract of JVMRandom (as I understand
it).  If we want to maintain the static, single-underlying-Random behavior, we would need
to create a static random instance and use that instance's nextLong() method in place of super.nextLong()
in the patch.

> RandomUtils.nextLong() get all even number
> ------------------------------------------
>
>                 Key: LANG-472
>                 URL: https://issues.apache.org/jira/browse/LANG-472
>             Project: Commons Lang
>          Issue Type: Bug
>         Environment: all system
>            Reporter: zhangruimin
>         Attachments: lang-472.patch
>
>
> when we use the following code , we can see that the method produce only even number.
>          while (true) {
> //        for (int i = 0; i < 100; i++) {
>             if (RandomUtils.nextLong() % 2 == 1) {
>                 System.out.println("ok");
>             }
>         }

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