Exception in thread "main" java.lang.NoClassDefFoundError:

I am trying to run Maven Project from command line and ending with the below issue.
Please help

C:\Users\GowriKumar\workspace\JenkinsTestng>set classpath=C:\Users\GowriKumar\workspace\JenkinsTestng\bin;C:\Users\GowriKumar\workspace\JenkinsTestng\lib*

C:\Users\GowriKumar\workspace\JenkinsTestng>java org.testng.TestNG testng.xml
Error: A JNI error has occurred, please check your installation and try again
Exception in thread “main” java.lang.NoClassDefFoundError: com/beust/jcommander/ParameterException
at java.lang.Class.getDeclaredMethods0(Native Method)
at java.lang.Class.privateGetDeclaredMethods(Unknown Source)
at java.lang.Class.privateGetMethodRecursive(Unknown Source)
at java.lang.Class.getMethod0(Unknown Source)
at java.lang.Class.getMethod(Unknown Source)
at sun.launcher.LauncherHelper.validateMainClass(Unknown Source)
at sun.launcher.LauncherHelper.checkAndLoadMain(Unknown Source)
Caused by: java.lang.ClassNotFoundException: com.beust.jcommander.ParameterException
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
… 7 more

Exception in thread “main” java.lang.NoClassDefFoundError: com/beust/jcommander/ParameterException