To Increase the Heap Size in NetBeans IDE

Before You Begin

It is recommended that you preserve a copy of the netbeans.conf file before beginning this process.

1. From the etc directory in the NetBeans IDE installation directory, copy the netbeans.conf file into your NetBeans IDE user directory, for example: $HOME/ .netbeans/caps/etc directory.

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   Note –

   You may need to create the etc directory in the NetBeans IDE user directory.

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2. In your NetBeans IDE user directory, edit the —J-Xmx command line Java startup switch in the netbeans.conf file, for example:

   # command line switches
   netbeans_default_options=" -J-Xms32m -J-Xmx128m -J-XX:PermSize=32m
   -J-XX:MaxPermSize=96m -J-Xverify:none -J-Dapple.laf.useScreenMenuBar=true"

3. Restart NetBeans IDE.

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   Note –

   To ensure that you do not run out of memory while the built-in parser is running, you can also add the garbage collector switches —-J-XX:+UseConcMarkSweepGC (concurrent collector) and -J-XX:+UseParNewGC (parallel collector) to the netbeans.conf file.

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