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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 Mubeen Shaik, 1 year ago
TestPack (wrong name: MUBEEN/JAVA/DAN/TestPack)
via Coderanch by Sascha Balkau, 1 year ago
Test (wrong name: testpack/Test)
via Coderanch by Sascha Balkau, 1 year ago
via Google Groups by yawnmoth, 2 years ago
Test (wrong name: test)
via Oracle Community by 807606, 7 months ago
via Coderanch by Kevin Brennan, 1 year ago
helloworldapp (wrong name: HelloWorldApp)
java.lang.NoClassDefFoundError: TestPack (wrong name:
 MUBEEN/JAVA/DAN/TestPack)	at java.lang.ClassLoader.defineClass1(Native Method)	at java.lang.ClassLoader.defineClass(ClassLoader.java:620)	at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:124)	at java.net.URLClassLoader.defineClass(URLClassLoader.java:260)	at java.net.URLClassLoader.access$100(URLClassLoader.java:56)	at java.net.URLClassLoader$1.run(URLClassLoader.java:195)	at java.security.AccessController.doPrivileged(Native Method)	at java.net.URLClassLoader.findClass(URLClassLoader.java:188)	at java.lang.ClassLoader.loadClass(ClassLoader.java:306)	at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:268)	at java.lang.ClassLoader.loadClass(ClassLoader.java:251)	at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:319)