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Samebug tips

  1. ,
    Expert tip

    This means you're missing a class that Java needs for this program. Check if you're not missing the jsr305-1.3.7.jar from your classpath, it's the jar that contains the class javax.annotation.Nullable.

  2. ,

    If JVM throws ClassNotFoundException the class is not found in classpath. It means that something is not configured correctly. So check the relevant class is in the classpath. If the class is packaged into a jar, the jar should also in the classpath.

Solutions on the web

via Stack Overflow by Alireza Fattahi
, 2 years ago
via struts-user by Thim Anneessens, 1 year ago
via struts-user by Lukasz Lenart, 1 year ago
via Stack Overflow by JaHax
, 2 years ago
via Stack Overflow by nialloc
, 2 years ago
java.lang.NoClassDefFoundError: org/apache/struts/action/Action at java.lang.ClassLoader.defineClass1(Native Method) at java.lang.ClassLoader.defineClass( at at org.apache.catalina.loader.WebappClassLoader.findClassInternal( at org.apache.catalina.loader.WebappClassLoader.findClass( at org.apache.catalina.loader.WebappClassLoader.loadClass( at org.apache.catalina.loader.WebappClassLoader.loadClass( at com.opensymphony.xwork2.util.finder.ClassLoaderInterfaceDelegate.loadClass( at com.opensymphony.xwork2.util.finder.ClassFinder$ClassInfo.get( at com.opensymphony.xwork2.util.finder.ClassFinder.findClasses( at org.apache.struts2.convention.PackageBasedActionConfigBuilder.findActions( at org.apache.struts2.convention.PackageBasedActionConfigBuilder.buildActionConfigs( at org.apache.struts2.convention.ClasspathPackageProvider.loadPackages( at com.opensymphony.xwork2.config.impl.DefaultConfiguration.reloadContainer( at com.opensymphony.xwork2.config.ConfigurationManager.getConfiguration( at org.apache.struts2.dispatcher.Dispatcher.getContainer( by: java.lang.ClassNotFoundException: org.apache.struts.action.Action at org.apache.catalina.loader.WebappClassLoader.loadClass( at org.apache.catalina.loader.WebappClassLoader.loadClass( ... 16 more