HP-UX Programmer's Guide for Java 2

• Security tools (keytool, jarsigner, policytool, kinit, klist, ktab)
• Java™ IDL and RMI-IIOP Tools (tnameserv, idlj, orbd (1.4 only), servertool)
Setting the class path
The class path is the path that the Java™ runtime environment searches for classes and
other resource files.
For information on how to set the class search path (more commonly known by the
shorter name, "class path") refer to Oracle's documentation at: http://
download.oracle.com/javase/1.4.2/docs/tooldocs/solaris/classpath.html
How classes are found
For documentation on how the Java™ launcher and javac and javadoc find classes,
refer to Oracle's documentation at: http://download.oracle.com/javase/1.4.2/docs/
tooldocs/findingclasses.html
Excluding methods from being compiled
To prevent the HotSpot runtime compiler from compiling certain methods, you can
create a file called .hotspot_compiler and add the method to be excluded to the
file.
For example, if you want to exclude java/lang/String.indexOf() from being
compiled, you would add the following line to the .hotspot_compiler file:
exclude java/lang/String indexOf
By default, the HotSpot VM looks for .hotspot_compiler under the directory where
libjvm.sl resides. In addition, it looks for a .hotspot_compiler file in the current
directory where the JVM was started.
For example, if you are running the JVM on a PA2.0 server, narrow mode, and the JVM
was started from a script called run.sh in the directory /app/myapp/bin, it first
looks in the directory {JAVA_HOME}/jre/lib/PA_RISC2.0/server and then it
looks for a .hotspot_compiler file in the /app/myapp/bin directory.
Another way to exclude a method is to specify the .hotspot_compiler file using
the VM option-XX:CompileCommandFile=<list of .hotspot_compiler
files separated by ":">
For example:
-XX:CompileCommandFile=/tmp/foo/.hotspot_compiler_app_version_71:\
/tmp/foo2/hc81
If you specify the -XX:CompileCommandFile option it overrides the default behavior
of the VM and the VM will NOT scan either the libjvm.sl directory or the current
directory for a .hotspot_compiler file.
10 HotSpot Technology Tools and Commands