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Editorial Team
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Asked: 2026-05-16T17:55:08+00:00

I am not very experience with java and this is driving me crazy. I

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I am not very experience with java and this is driving me crazy. I wrote a java program FileManagement and I need to run it from the command line.

I can compile it from the command line with javac FileManagement/*.java which will create all the classes in that folder but when I try java FileManagement.Main it says :

Exception in thread “main” java.lang.NoClassDefFoundError:
FileManagement/Main

The thing is that I have tried this same procedure in a remote computer and it is working fine. It is not working on mine.

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1 Answer

  1. Editorial Team

    If your Main class is in a package called FileManagement, then try:

    java -cp . FileManagement.Main

    in the parent folder of the FileManagement folder.

    If your Main class is not in a package (the default package) then cd to the FileManagement folder and try:

    java -cp . Main

    More info about the CLASSPATH and how the JRE find classes:

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