Re: Where to copy servlet.jar?

From:

Lew <lew@nospam.lewscanon.com>

Newsgroups:

comp.lang.java.programmer

Date:

Thu, 29 Mar 2007 21:00:13 -0400

Message-ID:

<Wq2dnTOBg8eA_JHbnZ2dneKdnZydnZ2d@comcast.com>

Lew wrote:

The Java 6 JVM is almost completely compatible with 1.4 code. It's the
other way around that causes trouble. You might run into difficulty
with code that uses "enum" or "assert", but you can always compile the
code "javac -target 1.4" to remove that incompatibility while using
Java 6.

Tom Hawtin wrote:

And "-source 1.4" to get javac to even start to work. Then you probably
get an error at runtime saying something along the lines that
StringBuffer append(StringBuffer) does not exist. So you also need
something like "-bootclasspath /usr/java/j2re1.4.2_13/lib/rt.jar"

That's an example of trying to run J6 classes on a 1.4 engine, isn't it? The
bootclasspath is only needed if you're running stuff on an older JVM. I was
speaking of running J 1.4 classes on a J6 engine, which does have
StringBuffer's append(StringBuffer) method but won't see it in the older classes

The J6 'javac' should work fine on 1.4 source with the '-source 1.4' option.

The point I was addressing was:

I do not want to install the latest 1.6.x SDK because
many of the other tools I have to learn to use make use of the 1.4
version.

Those tools should run fine under a J6 engine.

-- Lew