GIJ(1) GNU GIJ(1)NAMEgij - GNU interpreter for Java bytecode
SYNOPSISgij [OPTION] ... JARFILE [ARGS...]
gij [-jar] [OPTION] ... CLASS [ARGS...]
[-cp path] [-classpath path]
[-Dname[=value]...]
[-ms=number] [-mx=number]
[--showversion] [--version] [--help]
DESCRIPTION
"gij" is a Java bytecode interpreter included with
"libgcj". "gij" is not available on every platform; port-
ing 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 dynami-
cally 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-cp path
-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 ini-
tialized at the program's startup and can be retrieved
at runtime using the "java.lang.System.getProperty"
method.
-ms=number
This sets the initial heap size.
-mx=number
This sets the maximum heap size.
-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.
--version
Print version number, then exit.
SEE ALSOgcc(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 Free Software Foundation, Inc.
Permission is granted to copy, distribute and/or modify
this document under the terms of the GNU Free Documenta-
tion License, Version 1.2 or any later version published
by the Free Software Foundation; with the Invariant Sec-
tions 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 FSF's Front-Cover Text is:
A GNU Manual
(b) The FSF's 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.
gcc-3.3 2003-05-14 GIJ(1)
