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https://issues.apache.org/jira/browse/LANG-472?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12829378#action_12829378
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Sebb commented on LANG-472:
---------------------------
Applied Phil's patch, but adjusted so that the class now uses a static Random()
instance for all random number generation.
URL: http://svn.apache.org/viewvc?rev=906318&view=rev
Log:
LANG-472 - RandomUtils.nextLong() get all even number
Modified:
commons/proper/lang/branches/LANG_2_X/src/main/java/org/apache/commons/lang/math/JVMRandom.java
commons/proper/lang/branches/LANG_2_X/src/test/java/org/apache/commons/lang/math/RandomUtilsTest.java
I suspect nextLong(long) probably does not generate very evenly distributed
numbers.
Also documented non-negative behaviour:
URL: http://svn.apache.org/viewvc?rev=906319&view=rev
Log:
LANG-472 - Document >=0 behaviour
Modified:
commons/proper/lang/branches/LANG_2_X/src/main/java/org/apache/commons/lang/math/JVMRandom.java
> RandomUtils.nextLong() get all even number
> ------------------------------------------
>
> Key: LANG-472
> URL: https://issues.apache.org/jira/browse/LANG-472
> Project: Commons Lang
> Issue Type: Bug
> Components: lang.math.*
> Environment: all system
> Reporter: zhangruimin
> Fix For: 2.x
>
> 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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