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    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 Jenkins JIRA by ajuffinger, 1 year ago
hudson/Main (wrong name: Main)
via Jenkins JIRA by ajuffinger, 1 year ago
hudson/Main (wrong name: Main)
via java-forums.org by Unknown author, 1 year ago
Main (wrong name: classsched/Main)
via Stack Overflow by Dragos
, 1 year ago
MyClass(wrong name: com/example/main/MyClass)
via askjonskeet.com by Unknown author, 2 years ago
MyClass(wrong name: com/example/main/MyClass)
via Coderanch by Keitaro Oman, 1 year ago
Simpledotcomtestdrive (wrong name: SimpleDotComTestDrive)
java.lang.NoClassDefFoundError: hudson/Main (wrong name: Main)	at java.lang.ClassLoader.defineClass1(Native Method)	at java.lang.ClassLoader.defineClassCond(ClassLoader.java:632)	at java.lang.ClassLoader.defineClass(ClassLoader.java:616)	at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:141)	at java.net.URLClassLoader.defineClass(URLClassLoader.java:283)	at java.net.URLClassLoader.access$000(URLClassLoader.java:58)	at java.net.URLClassLoader$1.run(URLClassLoader.java:197)	at java.security.AccessController.doPrivileged(Native Method)	at java.net.URLClassLoader.findClass(URLClassLoader.java:190)	at java.lang.ClassLoader.loadClass(ClassLoader.java:307)	at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)	at java.lang.ClassLoader.loadClass(ClassLoader.java:248)	at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1302)	at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1233)	at hudson.EnvVars.initMaster(EnvVars.java:223)	at hudson.EnvVars.(EnvVars.java:218)	at hudson.model.Computer.getEnvironment(Computer.java:736)	at hudson.model.Run.getEnvironment(Run.java:1648)	at hudson.model.AbstractBuild.getEnvironment(AbstractBuild.java:663)	at hudson.maven.MavenModuleSetBuild.getEnvironment(MavenModuleSetBuild.java:128)	at hudson.maven.MavenModuleSetBuild$RunnerImpl.doRun(MavenModuleSetBuild.java:384)	at hudson.model.AbstractBuild$AbstractRunner.run(AbstractBuild.java:416)	at hudson.model.Run.run(Run.java:1243)	at hudson.maven.MavenModuleSetBuild.run(MavenModuleSetBuild.java:304)	at hudson.model.ResourceController.execute(ResourceController.java:88)	at hudson.model.Executor.run(Executor.java:122)