.\" $NetBSD: java-wrapper.1,v 1.1.1.1 2004/06/04 16:35:07 jmmv Exp $
.\"
.\" java-wrapper - Runs different Java implementations transparently.
.\" Copyright (c) 2004 Julio M. Merino Vidal <jmmv@NetBSD.org>
.\"
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.\" modification, are permitted provided that the following conditions
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.Dd June 4, 2004
.Dt JAVA-WRAPPER 1
.Os
.Sh NAME
.Nm java-wrapper
.Nd runs different Java implementations transparently
.Sh SYNOPSIS
.Nm appletviewer
.Op Ar arg1 .. argN
.Nm jar
.Op Ar arg1 .. argN
.Nm java
.Op Ar arg1 .. argN
.Nm javac
.Op Ar arg1 .. argN
.Nm javadoc
.Op Ar arg1 .. argN
.Nm javah
.Op Ar arg1 .. argN
.Nm javap
.Op Ar arg1 .. argN
.Sh DESCRIPTION
.Nm
is a small wrapper that overrides the most common Java programs.
It executes the right Java implementation based on user's preference.
.Pp
A configuration file is used to specify which Java implementation is chosen.
The wrapper first tries to read
.Pa ~/.java-wrapper.conf ,
falling back to
.Pa @PKG_SYSCONFDIR@/java-wrapper.conf
if not found (note that one of them must exist; otherwise it will simply
abort execution).
.Pp
The configuration file simply defines some variables that map Java programs
to Java implementations.
Each variable contains the name of an implementation, installed from pkgsrc,
like
.Sq sun14
or
.Sq kaffe .
Variables doing this mapping have the same name as the Java program, but in
uppercase letters:
.Va APPLETVIEWER ,
.Va JAR ,
.Va JAVA ,
.Va JAVAC ,
.Va JAVADOC ,
.Va JAVAH ,
and
.Va JAVAP .
Even though, there is an special variable called
.Va DEFAULT .
This one sets the name of the implementation used in case any of the specific
variables are unset or empty.
.Pp
The real binary is then searched in
.Pa @PREFIX@/bin/,
using the name given in the variable, followed by a dash, followed by the
Java program.
For example, if you set
.Sq JAVA=sun14 ,
whenever you run
.Nm java ,
you will be really executing
.Pa @PREFIX@/bin/sun14-java .
.Sh FILES
.Bl -tag -width @PKG_SYSCONFDIR@/java-wrapper.conf -compact
.It Pa @PREFIX@/bin/
Location of real Java binaries.
.It Pa @PKG_SYSCONFDIR@/java-wrapper.conf
System wide configuration file.
.It Pa ~/.java-wrapper.conf
User specific configuration file.
.El
.Sh AUTHORS
.An Julio M. Merino Vidal Aq jmmv@NetBSD.org