gij - Unix, Linux Command
NAME
gij - GNU interpreter for Java bytecode
SYNOPSIS
gij [OPTION] ... JARFILE [ARGS...]
gij [-jar] [OPTION] ... CLASS [ARGS...]
[-cp path] [-classpath path]
[-Dname[=value]...]
[-ms=number] [-mx=number]
[-Xargument] [-verbose] [-verbose:class]
[--showversion] [--version] [--help][-?]
DESCRIPTION
gij is a Java bytecode interpreter included with libgcj.
gij is not available on every platform; porting it requires a
small amount of assembly programming which has not been done for all the
targets supported by gcj.
The primary argument to gij is the name of a class or, with
-jar, a jar file. Options before this argument are interpreted
by gij; remaining options are passed to the interpreted program.
If a class name is specified and this class does not have a main
method with the appropriate signature (a static void method with
a String[] as its sole argument), then gij will print an
error and exit.
If a jar file is specified then gij will use information in it to
determine which class main method will be invoked.
gij will invoke the main method with all the remaining
command-line options.
Note that gij is not limited to interpreting code. Because
libgcj includes a class loader which can dynamically load shared
objects, it is possible to give gij the name of a class which has
been compiled and put into a shared library on the class path.
OPTIONS
Tag | Description |
-cp path
|
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-classpath path
|
Set the initial class path. The class path is used for finding
class and resource files. If specified, this option overrides the
CLASSPATH environment variable. Note that this option is
ignored if -jar is used.
|
-Dname[=value]
|
This defines a system property named name with value value.
If value is not specified then it defaults to the empty string.
These system properties are initialized at the programs startup and can
be retrieved at runtime using the java.lang.System.getProperty
method.
|
-ms=number
|
Equivalent to -Xms.
|
-mx=number
|
Equivalent to -Xmx.
|
-noverify
|
Do not verify compliance of bytecode with the VM specification. In addition,
this option disables type verification which is otherwise performed on BC-ABI
compiled code.
|
-X
|
|
-Xargument
|
Supplying -X by itself will cause gij to list all the
supported -X options. Currently these options are supported:
Tag | Description |
-Xmssize
|
Set the initial heap size.
|
-Xmxsize
|
Set the maximum heap size.
|
-Xsssize
|
Set the thread stack size.
|
Unrecognized -X options are ignored, for compatibility with
other runtimes.
|
-jar
|
This indicates that the name passed to gij should be interpreted
as the name of a jar file, not a class.
|
--help
|
|
-?
|
Print help, then exit.
|
--showversion
|
Print version number and continue.
|
--fullversion
|
Print detailed version information, then exit.
|
--version
|
Print version number, then exit.
|
-verbose
|
|
-verbose:class
|
Each time a class is initialized, print a short message on standard error.
|
gij also recognizes and ignores the following options, for
compatibility with existing application launch scripts:
-client, -server, -hotspot, -jrockit,
-agentlib, -agentpath, -debug, -d32,
-d64, -javaagent, -noclassgc, -verify,
and -verifyremote.
SEE ALSO
gcc(1), gcj(1), gcjh(1), jv-scan(1), jcf-dump(1), gfdl(7),
and the Info entries for gcj and gcc.
gcc(1), gcj(1), gcjh(1), jv-scan(1), jcf-dump(1), gfdl(7),
and the Info entries for gcj and gcc.
COPYRIGHT
Copyright (c) 2001, 2002, 2003, 2004, 2005 Free Software Foundation, Inc.
Permission is granted to copy, distribute and/or modify this document
under the terms of the GNU Free Documentation License, Version 1.2 or
any later version published by the Free Software Foundation; with the
Invariant Sections being GNU General Public License, the Front-Cover
texts being (a) (see below), and with the Back-Cover Texts being (b)
(see below). A copy of the license is included in the
man page gfdl(7).
(a) The FSFs Front-Cover Text is:
(b) The FSFs Back-Cover Text is:
You have freedom to copy and modify this GNU Manual, like GNU
software. Copies published by the Free Software Foundation raise
funds for GNU development.
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