Exception in thread “main” - NoClassDefFoundError

Question

After using java -jar tracker-server.jar "configuration.xml"

I got:

Exception in thread "main" java.lang.NoClassDefFoundError: org/jboss/netty/bootstrap/Bootstrap
            at org.traccar.Main.main(Main.java:26)
    Caused by: java.lang.ClassNotFoundException: org.jboss.netty.bootstrap.Bootstrap
            at java.net.URLClassLoader$1.run(URLClassLoader.java:217)
            at java.security.AccessController.doPrivileged(Native Method)
            at java.net.URLClassLoader.findClass(URLClassLoader.java:205)
            at java.lang.ClassLoader.loadClass(ClassLoader.java:323)
            at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:294)
            at java.lang.ClassLoader.loadClass(ClassLoader.java:268)
            ... 1 more

I found only its some about third party library. But I'm not friendly with Java.

Answer 1

The ClassNotFoundException is caused by there soem jar file missing from the classpath. Search for the jar what includes the missing class and make it available for the enviroment.

See this thread: java.lang.NoClassDefFoundError: org.jboss.netty.bootstrap.ClientBootstrap