    -Xbootclasspath:<directories and zip/jar files separated by :>
                      set search path for bootstrap classes and resources
    -Xnoclassgc       disable class garbage collection
    -Xms<size>        set initial Java heap size
    -Xmx<size>        set maximum Java heap size
    -Xrs              reduce the use of OS signals
    -Xcheck:jni       perform additional checks for JNI functions
    -Xrunhprof[:help]|[:<option>=<value>, ...]
                      perform heap, cpu, or monitor profiling
    -Xdebug           enable remote debugging

The -X options are non-standard and subject to change without notice.
