Java on the Mac

Question

I've been programming Java on windows for ages and just moved to the Mac.

I'm running the following command which works on the PC but doesn't on a Mac what am I doing wrong.

java -classpath ./lib.patches/*:./lib.core/*:./lib.custom/* test.Test

This gives me a ClassNotFound but test.Test is in a one of the jars in the path.

Thanks for all help.

OK I've debugged further and when I run this command

java -cp . test.Test

I've worked it out!!

The script was copied from a PC and had the wrong returns to end the lines.

This had the bizarre outcome of creating a ClassNotFound.

from the command line it works but from a script it throws ClassNotFound - must be a Mac issue ...

java version "1.6.0_26" Java(TM) SE Runtime Environment (build 1.6.0_26-b03-383-11A511) Java HotSpot(TM) 64-Bit Server VM (build 20.1-b02-383, mixed mode) — Dan, Oct 26 '11 at 19:34
@Inerdia (Sorry, that's Linux, not OSX, they don't need to be escaped.) — Dave Newton, Oct 26 '11 at 19:42
possible duplicate of [Adding JAR to CLASSPATH in Mac OS](http://stackoverflow.com/questions/5028286/adding-jar-to-classpath-in-mac-os) — Daniel Earwicker, Oct 26 '11 at 19:43
The duplicate I've attached (above comment) says that wildcarding doesn't work on Mac OS X. A quick look on Google yielded another claim that this was not added to Apple's JDK. — Daniel Earwicker, Oct 26 '11 at 19:44
@DanielEarwicker Not really, since wildcarding works fine for me on Java 6. — Dave Newton, Oct 26 '11 at 19:44
see my further debugging above - maybe I should raise that as a new question? — Dan, Oct 26 '11 at 20:07
@Dan Did you try defining the `java` command's classpath including the current directory? You should, if `test.Test` is in class files off the current directory. Added that to my answer. — Dave Newton, Oct 26 '11 at 20:17

Dave Newton · Answer 1 · 2011-10-26T20:21:34.287

Works fine for me. (Escaping to show it's not related to shell globbing, but it works either way.)

With lucene-core in directory 1 and lucene demo in directory 2, or both in a single directory:

...lucene/lucene-3.4.0/tmp $ echo $CLASSPATH

...lucene/lucene-3.4.0/tmp $ java -cp ./1/\*:./2/\* org.apache.lucene.demo.IndexFiles -docs .
Indexing to directory 'index'...
adding ./1/lucene-core-3.4.0.jar
adding ./2/lucene-demo-3.4.0.jar
adding ./index/_0.fdt
adding ./index/_0.fdx
adding ./index/write.lock
1605 total milliseconds

If you also need class files based off the current directory, you should explicitly add the . path to the classpath.

+1 I get a similar [result](http://stackoverflow.com/questions/7907814/java-on-the-mac/7908432#7908432). — trashgod, Oct 26 '11 at 20:23

score 1 · Accepted Answer · edited May 23 '17 at 12:19

1

Verifying @Dave Newton's result, using

$ java -version
java version "1.6.0_26"

with ThermometerDemo, this command works:

$ java -cp /opt/jfreechart/*:build/classes chart.ThermometerDemo

edited May 23 '17 at 12:19

Community

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answered Oct 26 '11 at 20:22

trashgod

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The [wildcard](http://download.oracle.com/javase/6/docs/technotes/tools/solaris/classpath.html) is new in J2SE 6; cf [this](http://download.oracle.com/javase/1.5.0/docs/tooldocs/solaris/classpath.html). – trashgod Oct 29 '11 at 19:44

score 0 · Answer 3 · answered Oct 26 '11 at 19:35

0

try

java -cp './lib.patches/*:./lib.core/*:./lib.custom/*' test.Test

instead

answered Oct 26 '11 at 19:35

A Question Asker

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does Test.java have "package test;" at the top? – A Question Asker Oct 26 '11 at 19:46

Java on the Mac

3 Answers3