title: How to add gradle dependency in executable jar from idea intelliJ getting No class def found error. facing issue with smack 4.2.0 beta3
body: <pre><code> Error: A JNI error has occurred, please check your installation and try again
  Exception in thread "main" java.lang.NoClassDefFoundError: org/jxmpp/jid/Jid
          at java.lang.Class.getDeclaredMethods0(Native Method)
          at java.lang.Class.privateGetDeclaredMethods(Class.java:2701)
          at java.lang.Class.privateGetMethodRecursive(Class.java:3048)
          at java.lang.Class.getMethod0(Class.java:3018)
          at java.lang.Class.getMethod(Class.java:1784)
          at sun.launcher.LauncherHelper.validateMainClass(LauncherHelper.java:544)
          at sun.launcher.LauncherHelper.checkAndLoadMain(LauncherHelper.java:526)
  Caused by: java.lang.ClassNotFoundException: org.jxmpp.jid.Jid
          at java.net.URLClassLoader.findClass(URLClassLoader.java:381)
          at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
          at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331)
          at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
          ... 7 more
  </code></pre>
  
  <p>when i execute my code from intellij it is working fine but while executing jar like <strong>java -jar test.jar</strong> it giving above error</p>