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https://issues.apache.org/jira/browse/LUCENE-5360?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13844605#comment-13844605
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Shawn Heisey commented on LUCENE-5360:
--------------------------------------

{quote}
Are you sure that source level is 1.6 because there is a lot of files with 1.7 
features e.g. try-with-catch and diamond operator?
For example:
BooleanPerceptronClassifier.java (package org.apache.lucene.classification)
DocInverterPerField.java (org.apache.lucene.index)
etc.
{quote}

The SVN trunk (which is what will become 5.0 eventually) requires Java 7 and 
therefore has Java 7 constructs.  The branch named branch_4x (dev branch for 
4.x versions) only requires Java 6.  There is a LOT of testing during normal 
development, and even more testing before each release, so there is a very high 
confidence level that the 4.x version does not have Java 7 code in it.

The BooleanPerceptronClassifier.java file doesn't exist in branch_4x at all, 
and with a quick glance, I didn't seem any problems in the 4x version of 
DocInverterPerField.java.

If you actually do find Java 7 constructs in branch_4x, that's a bug.  Feel 
free to file issues and submit patches for any such problems that you find in 
branch_4x.  If you want to check branch_4x out from SVN, use the following 
command:

{code}
svn co http://svn.apache.org/repos/asf/lucene/dev/branches/branch_4x
{code}


> Add support for developing in netbeans IDE
> ------------------------------------------
>
>                 Key: LUCENE-5360
>                 URL: https://issues.apache.org/jira/browse/LUCENE-5360
>             Project: Lucene - Core
>          Issue Type: New Feature
>            Reporter: Michal Hlavac
>            Assignee: Steve Rowe
>            Priority: Minor
>              Labels: IDE, netbeans, patch
>             Fix For: 5.0, 4.7
>
>         Attachments: 5360.patch, LUCENE-5360.patch
>
>
> It will be nice to have ant target for building netbeans IDE project 
> definition.



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