fatal exception in android studio after compiling -


hi beginner in android studio while performing fragment example in android studio got error while running of project while clicking button in app shows message "unfortunately app has stopped".i have checked in log shows following don't know how solve it.???

com.example.xxx.xxx e/androidruntime﹕ fatal exception: main java.lang.classcastexception: com.example.xxx.xxx.menufragment cannot cast com.example.xxxx.xxxx.textfragment @ com.example.xxxx.xxx.menufragment.onlistitemclick(menufragment.java:28) @ android.app.listfragment$2.onitemclick(listfragment.java:160) @ android.widget.adapterview.performitemclick(adapterview.java:301) @ android.widget.abslistview.performitemclick(abslistview.java:1584) @ android.widget.abslistview$performclick.run(abslistview.java:3399) @ android.widget.abslistview$1.run(abslistview.java:4653) @ android.os.handler.handlecallback(handler.java:725) @ android.os.handler.dispatchmessage(handler.java:92) @ android.os.looper.loop(looper.java:175) @ android.app.activitythread.main(activitythread.java:5279) @ java.lang.reflect.method.invokenative(native method) @ java.lang.reflect.method.invoke(method.java:511) @ com.android.internal.os.zygoteinit$methodandargscaller.run(zygoteinit.java:1102) @ com.android.internal.os.zygoteinit.main(zygoteinit.java:869) @ dalvik.system.nativestart.main(native method)

thank in advance


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