VMS Help JAVA, Qualifiers  *Conan The Librarian (sorry for the slow response - running on an old VAX)

1 - /CHECKSOURCE

       /CHECKSOURCE
       -cs
       -checksource

    When a compiled class is loaded, this option causes the
    modification time of the class bytecode file to be compared to
    that of the class source file. If the source was modified more
    recently, it is recompiled and the new class file is loaded.

2 - /CLASSPATH

       /CLASSPATH=path
       -classpath path

    Specifies the path that the JAVA command uses to look up classes.
    Overrides the default or the CLASSPATH environment variable if
    it is set. Directories are separated by colons. Whether you use
    /CLASSPATH or -classpath, the general format for path is:

    .:{your_path}

    For example:

    .:/home/xyz/classes:/usr/local/java/classes

3 - /JIT

       /JIT
       /NOJIT
       -jit
       -nojit

    The Just-in-Time compiler (JIT) runs by default when you enter
    the Java command. To run the Java command with the interpreter
    instead of the JIT, use:

    $ JAVA /NOJIT ...

    The Java debugger runs the interpreter by default. To run the
    Java debugger with the JIT compiler, the /JIT qualifier must be
    explicitly specified.

    The JIT runs by default when you run appletviewer. To run
    appletviewer with the interpreter, use:

    $ APPLETVIEWER /PARAMETERS="-nojit"

4 - /MAXHEAP

       /MAXHEAP=x
       -mx x

    Sets the maximum size of the memory allocation pool (the garbage
    collected heap) to x. The default is 6 megabytes of memory. The
    value of x must be greater than or equal to 1000 bytes.

    By default, x is measured in bytes. You can specify x in either
    kilobytes or megabytes by appending the letter k for kilobytes or
    the letter m for megabytes.

5 - /INITHEAP

       /INITHEAP=x
       -ms x

    Sets the startup size of the memory allocation pool (the garbage
    collected heap) to x. The default is 6 megabytes of memory. The
    value of x must be greater than or equal to 1000 bytes.

    By default, x is measured in bytes. You can specify x in either
    kilobytes or megabytes by appending the letter k for kilobytes or
    the letter m for megabytes.

6 - /NOASYNCGC

       /NOASYNCGC
       -noasyncgc

    Turns off asynchronous garbage collection. When activated, no
    garbage collection takes place unless it is explicitly called or
    the program runs out of memory. Normally, garbage collection runs
    as an asynchronous thread in parallel with other threads.

7 - /NOCLASSGC

       /NOCLASSGC
       -noclassgc

    Turns off garbage collection of Java classes. By default, the
    Java interpreter reclaims space for unused Java classes during
    garbage collection.

8 - /PROFILE

       /PROFILE[=file-name]
       -prof[: file-name]

    This option works only with JAVA_G.

    It starts the Java Runtime with Java profiling enabled.

    If no file name is specified, the profile results are placed in
    the file []JAVA.PROF.

    Otherwise, the profile results are placed in the specified file.

9 - /LOGLEVEL

       /LOGLEVEL
       -l

    Sets the logging level (JAVA_G only).

10 - /VERSION

       /VERSION
       -version

    Prints the build version information.

11 - /HELP

       /HELP
       -help

    Prints a usage message.

12 - /MAXCSTACK

       /MAXCSTACK=x
       -ss x

    Each Java thread has two stacks: one for Java code and one for C
    code. The /MAXCSTACK option sets the maximum stack size that can
    be used by C code in a thread to x. Every thread spawned during
    the execution of the program passed to JAVA has x as its C stack
    size. The default units for x are bytes. The value of x must be
    greater than or equal to 1000 bytes.

    You can modify the meaning of x by appending either the letter
    k for kilobytes or the letter m for megabytes. The default stack
    size is 128 kilobytes (/MAXCSTACK=128k).

13 - /MAXJSTACK

       /MAXJSTACK=x
       -oss x

    Each Java thread has two stacks: one for Java code and one for
    C code. The /MAXJSTACK option sets the maximum stack size that
    can be used by Java code in a thread to x. Every thread spawned
    during the execution of the program passed to JAVA has x as its
    Java stack size. The default units for x are bytes. The value of
    x must be greater than or equal to 1000 bytes.

    You can modify the meaning of x by appending either the letter
    k for kilobytes or the letter m for megabytes. The default stack
    size is 400 kilobytes (/MAXJSTACK=400k).

14 - /TRACE

       /TRACE
       -t

    Prints a trace of the instructions executed (JAVA_G only).

15 - /COMMAND_LINE

       /COMMAND_LINE=file-name
       -V file-name

    Takes command-line options and arguments from the indicated file;
    causes other command-line options and arguments to be ignored.

    This qualifier is supported on OpenVMS systems only.

16 - /VERBOSE

       /VERBOSE
       -v
       -verbose

    Causes JAVA to print a message to stdout each time a class file
    is loaded.

17 - /VERBOSEGC

       /VERBOSEGC
       -verbosegc

    Causes the garbage collector to print out messages whenever it
    frees memory.

18 - /VERIFY

       /VERIFY
       /NOVERIFY
       -verify
       -noverify

    Performs byte-code verification on the class file. Be aware
    however, that JAVA/VERIFY does not perform a full verification
    in all situations. Any code path that is not actually executed
    by the interpreter is not verified. Therefore, JAVA/VERIFY cannot
    be relied on to certify class files unless all code paths in the
    class file are actually run.

    The /NOVERIFY qualifier (-noverify option) turns verification
    off.

19 - /VERIFYREMOTE

       /VERIFYREMOTE
       -verifyremote

    Runs the verifier on all code that is loaded into the system
    through a classloader. The default is /VERIFYREMOTE.

20 - /SYSTEM_PROPERTY

       /SYSTEM_PROPERTY="propertyName=newValue"
       -D propertyName=newValue

    Redefines a property value. The propertyName is the name of the
    property whose value you want to change and newValue is the value
    to change it to. For example, the following command line sets the
    value of the property awt.button.color to "green".

    % java -Dawt.button.color=green ...

    The JAVA command accepts any number of /SYSTEM_PROPERTY
    qualifiers on the command line.