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Editorial Team
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Asked: 2026-05-20T05:41:59+00:00

To compile my java app, I use from terminal: javac -cp commons-digester-2.1/commons-digester-2.1.jar:lucene-core-3.0.3.jar CollectionIndexer.java To

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To compile my java app, I use from terminal:

javac -cp commons-digester-2.1/commons-digester-2.1.jar:lucene-core-3.0.3.jar CollectionIndexer.java

To run the app I use:

java -classpath commons-digester-2.1/commons-digester-2.1.jar:lucene-core-3.0.3.jar CollectionIndexer

However I get the following error:

Exception in thread "main" java.lang.NoClassDefFoundError: commons-digester-2/1/commons-digester-2/1/jar:lucene-core-3/0/3/jar
Caused by: java.lang.ClassNotFoundException: commons-digester-2.1.commons-digester-2.1.jar:lucene-core-3.0.3.jar
    at java.net.URLClassLoader$1.run(URLClassLoader.java:202)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:307)
    at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:248)

I guess I’m defining correctly the classpath.. or what ?

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1 Answer

  1. Editorial Team

    Try -cp instead of classpath. Also add the current directory to the classpath.

    $ java -cp .:commons-digester-2.1/commons-digester-2.1.jar:lucene-core-3.0.3.jar CollectionIndexer

    or

    $ export CLASSPATH=.:commons-digester-2.1/commons-digester-2.1.jar:lucene-core-3.0.3.jar
$ java CollectionIndexer

    If on Windows, use backslashes and a semi-colon separator:

    java -cp .;commons-digester-2.1\commons-digester-2.1.jar;lucene-core-3.0.3.jar CollectionIndexer
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