Re: Multiple Java Version Tools

From:

Lew <lew@lewscanon.com>

Newsgroups:

comp.lang.java.softwaretools

Date:

Mon, 19 Nov 2007 12:11:15 -0500

Message-ID:

<GpqdnTyWCpApXtzanZ2dnUVZ_jWdnZ2d@comcast.com>

Richard F.L.R.Snashall wrote:

I have some simple optical design tools that I make available
on the web. Up to now, I have been delivering them in versions
for 1.4.2 and 1.5.0. To do that, I have been using Netbeans
for daily development (1.5.0) and Sun ONE Studio sor simple
compilation and test (1.4.2), although I'm not sure that is
100% effective as the libraries used may still be the 1.5 set.

-bootclasspath option to javac tells what libraries to use.
<http://java.sun.com/javase/6/docs/technotes/tools/solaris/javac.html#crosscomp-example>

Documentation is your friend.

A friend has suggested that I start thinking about delivering
a version in 1.6 as well. Obviously, my methodology cannot
easily be extended.

Is there a way I can easily shift between versions? I think
what I'm talking about is perhaps a simple commmand sequence
that I can use to shift back and forth between the versions.
This would imply that I want to compile and run on the
different versions -- regression test on the old, at least.
That would mean that Netbeans would have to work with the
different Java version as well.

Multiple platforms is not a solution for me.

From your description, you already have multiple platforms, Java 1.4 and Java 5.

NetBeans will work with all versions of Java. It wraps the -source, -target
and -bootclasspath options to javac.

Tell NetBeans what JDKs you have. In project properties, tell NB for what
version of Java to target your app.

NB itself can run on Java 6 in all cases. It will correctly associate your
project with the Java version you put in the project properties.
--
Lew