1 -Xmixed mixed mode execution (default)
2 -Xint interpreted mode execution only
3 -Xbootclasspath:<directories and zip/jar files separated by :>
4 set search path for bootstrap classes and resources
5 -Xbootclasspath/a:<directories and zip/jar files separated by :>
6 append to end of bootstrap class path
7 -Xbootclasspath/p:<directories and zip/jar files separated by :>
8 prepend in front of bootstrap class path
9 -Xnoclassgc disable class garbage collection
10 -Xlog:<opts> control JVM logging, use -Xlog:help for details
11 -Xbatch disable background compilation
12 -Xms<size> set initial Java heap size
13 -Xmx<size> set maximum Java heap size
14 -Xss<size> set java thread stack size
15 -Xfuture enable strictest checks, anticipating future default
16 -Xrs reduce use of OS signals by Java/VM (see documentation)
17 -Xcheck:jni perform additional checks for JNI functions
18 -Xshare:off do not attempt to use shared class data
19 -Xshare:auto use shared class data if possible (default)
20 -Xshare:on require using shared class data, otherwise fail.
22 The -X options are non-standard and subject to change without notice.