gij(1)
NAME
gij - GNU interpreter for Java bytecode
SYNOPSIS
gij [OPTION] ... JARFILE [ARGS...] gij [-jar] [OPTION] ... CLASS [ARGS...] [-Dname[=value]...] [-ms=number] [-mx=number] [--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
- -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.
- --version
- Print version number, then exit.
SEE ALSO
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 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 1.1 or any later version published
by the Free Software Foundation; with the Invariant Sec
tions being ``GNU General Public License'', the FrontCover 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).