mdindoffer opened a new pull request #295: Drop usage of FileInput/OutputStreams - modules a* -> c* URL: https://github.com/apache/incubator-netbeans/pull/295 This change drops the usage of FileInputStream and FileOutputStream in cluster modules "a*" through "c*". The FIS/FOS are putting unnecesary pressure on the GC because of their finalize() method. I've measured small, but fairly consistent improvements in GC pauses during the startup of the IDE with couple of projects opened: Before: http://gceasy.io/my-gc-report.jsp?p=c2hhcmVkLzIwMTcvMTEvMjYvLS1nYXJiYWdlLWNvbGxlY3Rpb24tYmVmb3JlLXN0YXJ0dXAubG9nLS0yMC0xMS01OQ== After: http://gceasy.io/my-gc-report.jsp?p=c2hhcmVkLzIwMTcvMTEvMjYvLS1nYXJiYWdlLWNvbGxlY3Rpb24tYWZ0ZXIxY29tbWl0LXN0YXJ0dXAubG9nLS0yMC0xMy01Mw== In every module that required it (for the "Files" class workaround), theres a bump in javac source to version 7. Where appropriate I took the liberty of using try with resources blocks. I may have also fixed a resource leak somewhere in there. Further references: see JDK-8080225, HDFS-8526, JENKINS-42934
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