GIJ(1) GNU GIJ(1)
gij - GNU interpreter for Java bytecode
gij [OPTION] ... JARFILE [ARGS...]
gij [-jar] [OPTION] ... CLASS [ARGS...]
[--showversion] [--version] [--help]
"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 inter-
If a class name is specified and this class does not have a "main" method with the appro-
priate 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.
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
program's startup and can be retrieved at runtime using the "java.lang.System.getProp-
This sets the initial heap size.
This sets the maximum heap size.
This indicates that the name passed to "gij" should be interpreted as the name of a
jar file, not a class.
Print help, then exit.
Print version number and continue.
Print version number, then exit.
gcc(1), gcj(1), gcjh(1), jv-scan(1), jcf-dump(1), gfdl(7), and the Info entries for gcj
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 Documentation License, Version 1.1 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).
gcc-3.2.2 2003-02-25 GIJ(1)