Not able start chrome web browser

I am getting below while running first Appium web browser chrome test.please suggest.

Exception in thread “main” java.lang.NoClassDefFoundError: javax/websocket/DeploymentException
at io.appium.java_client.android.ListensToLogcatMessages.(ListensToLogcatMessages.java:34)
at demo.StartChrome.main(StartChrome.java:30)
Caused by: java.lang.ClassNotFoundException: javax.websocket.DeploymentException
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)