Standard options recognized by the Java HotSpot VM are described on the man page for the Java Application Launcher (the java utility) and in the online documentation at http://java.sun.com/j2se/1.4/docs/tooldocs/solaris/java.html. This chapter describes non-standard options recognized by the Java HotSpot VM:
Options that begin with -X are non-standard (not guaranteed to be supported on all VM implementations), and are subject to change without notice in subsequent releases of the Java 2 SDK.
Because the -XX options have specific system requirements for correct operation and may require privileged access to system configuration parameters, they are not recommended for casual use. These options are also subject to change without notice.