OutOfMemory while building BSSV package

I got the below errors while trying to build a BSSV package.  Do you have any ideas?  I'm using 9.1.4 on Windows server.  Thanks

[javac] Compiling 5177 source files to C:\E910\DV910\package\DV910UK13\java\wls\classes

    [javac] Since fork is false, ignoring memoryMaximumSize setting.

    [javac]

    [javac]

    [javac] The system is out of resources.

    [javac] Consult the following stack trace for details.

    [javac] java.lang.OutOfMemoryError: Java heap space

    [javac] at com.sun.tools.javac.tree.TreeMaker.Select(TreeMaker.java:383)

    [javac] at com.sun.tools.javac.parser.Parser.term3(Parser.java:1029)

    [javac] at com.sun.tools.javac.parser.Parser.term2(Parser.java:686)