Re: set classpath correctly

From:
Knute Johnson <nospam@rabbitbrush.frazmtn.com>
Newsgroups:
comp.lang.java.help
Date:
Wed, 19 Dec 2007 09:58:37 -0800
Message-ID:
<hZcaj.4418$m6.2430@newsfe18.lga>
Mitchell_Collen wrote:

Lew,
Does the commands that you provided have to typed every everytime I open a
DOS window? I was wondering because I thought if a user set the classpath on
the system then all they'd have to do to compile is type javac program.java
and that's it.

Lew wrote:

I am very new to Java and any programming besides a little sql. Will
you tell

[quoted text clipped - 17 lines]

Second rule, you need to set the PATH to include the JDK\bin directory
so that javac.exe can be found.

Third rule: don't set the CLASSPATH.

Instead, use the -classpath (a.k.a., -cp) option to javac and to java.

cd $project/src
javac -classpath ../build/classes -d ../build/classes \
      com/lewscanon/foo/Main.java
javac -cp ../build/classes -d ../build/classes \
      com/lewscanon/foo/Main.java

java -classpath ../build/classes com.lewscanon.foo.Main
java -cp ../build/classes com.lewscanon.foo.Main


99.9% of the time you don't need a CLASSPATH. You aren't going to have
to type it ever probably or if you do it will be in your build script.
When you make your package directories, use a single root and life will
be simple.

--

Knute Johnson
email s/nospam/knute/

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