title: Getting error on using TestNG
body: <p>When running a java selendroid code with testNG, getting an error message, "A Java Exception has occurred." with below exception - </p>
  
  <pre><code>Exception in thread "main" java.lang.NoClassDefFoundError: org/testng/TestNGException
  at java.lang.Class.getDeclaredMethods0(Native Method)
  at java.lang.Class.privateGetDeclaredMethods(Class.java:2688)
  at java.lang.Class.privateGetMethodRecursive(Class.java:3035)
  at java.lang.Class.getMethod0(Class.java:3005)
  at java.lang.Class.getMethod(Class.java:1771)
  at sun.launcher.LauncherHelper.validateMainClass(LauncherHelper.java:544)
  at sun.launcher.LauncherHelper.checkAndLoadMain(LauncherHelper.java:526)
  Caused by: java.lang.ClassNotFoundException: org.testng.TestNGException
  at java.net.URLClassLoader$1.run(URLClassLoader.java:372)
  at java.net.URLClassLoader$1.run(URLClassLoader.java:361)
  at java.security.AccessController.doPrivileged(Native Method)
  at java.net.URLClassLoader.findClass(URLClassLoader.java:360)
  at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
  at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)
  at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
  ... 7 more
  </code></pre>
  
  <p>Below is the selendroid java code - </p>
  
  <pre><code>    package com.selendroid.demo;
  
  import org.openqa.selenium.WebDriver;
  
  import io.selendroid.SelendroidDriver;
  import io.selendroid.common.SelendroidCapabilities;
  import io.selendroid.common.device.DeviceTargetPlatform;
  import io.selendroid.standalone.SelendroidConfiguration;
  import io.selendroid.standalone.SelendroidLauncher;
  
  public class Sele {
  
      private WebDriver driver;
  
      public void setUp() throws Exception {
  
          System.out.println("------------------------Started");
  
          SelendroidConfiguration config = new SelendroidConfiguration();
  
          // Add the selendroid-test-app to the standalone server
          config.addSupportedApp("Demo.apk");
  
          // start the standalone server
          SelendroidLauncher selendroidServer = new SelendroidLauncher(config);
          selendroidServer.launchSelendroid();
  
          // Create the selendroid capabilities
          SelendroidCapabilities capa = new SelendroidCapabilities(
                  "io.selendroid.androiddriver:0.16.0");
  
          capa.setAut("com.example.demo:1.0");
          capa.setPlatformVersion(DeviceTargetPlatform.ANDROID15);
          // capa.setEmulator(false);
          // capa.setCapability(SelendroidCapabilities.EMULATOR, true);
          // capa.setSerial("emulator-5554");
          SelendroidDriver driver = new SelendroidDriver(capa);
  
          capa.wait(100);
          driver = new SelendroidDriver(capa);
  
  
  
      }
  
      }
  </code></pre>
  
  <p>Not familiar with testng and selendroid so please give the solution in detail.</p>