Wednesday, July 3, 2024
HomeComputer programmingJava programmingJava: Exception in thread main java.lang.NoClassDefFoundError

Java: Exception in thread main java.lang.NoClassDefFoundError

This tutorial explains a common error that beginning Java authors may experience.

    Exception in thread “main” java.lang.NoClassDefFoundError:

    When trying to run a Java program, you may get this annoying error. I first got it when running our simple hello world program.

    The error occurs because the classpath is not set up or referenced correctly.

    Executing your program using the following command should correct the problem:
    java -classpath . helloworld

    In this command, helloworld is the name of your compiled class.

    This tells Java that your classpath is your local directory.

David Kirk
David Kirk
David Kirk is one of the original founders of tech-recipes and is currently serving as editor-in-chief. Not only has he been crafting tutorials for over ten years, but in his other life he also enjoys taking care of critically ill patients as an ICU physician.


Please enter your comment!
Please enter your name here

Most Popular


Recent Comments

error: Content is protected !!