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  1. ,
    Expert tip

    Look if your classpath is correct, and check if the versions of your libraries match the version you described in your pom.xml

Solutions on the web

via Coderanch by John Cristiano, 1 year ago
class/MyFirstApp (wrong name: MyFirstApp)
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hello (wrong name: Hello)
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via Coderanch by Eddie Davis, 1 year ago
output (wrong name: OutPut)
via Coderanch by Arun C. Giridharan, 1 year ago
java.lang.NoClassDefFoundError: class/MyFirstApp (wrong name: MyFirstApp)	at java.lang.ClassLoader.defineClass1(Native Method)	at java.lang.ClassLoader.defineClass(Unknown Source)	at Source)	at Source)	at$000(Unknown Source)	at$ Source)	at Method)	at Source)	at java.lang.ClassLoader.loadClass(Unknown Source)	at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)	at java.lang.ClassLoader.loadClass(Unknown Source)	at java.lang.ClassLoader.loadClassInternal(Unknown Source)