java.lang.NullPointerException: Attempt to invoke interface method 'android.view.MenuItem android.view.MenuItem.setIntent(android.content.Intent)' on a null object reference

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Attempt to invoke interface method 'android.view.MenuItem android.view.MenuItem.setIntent(android.content.Intent)' on a null object reference
java.lang.NullPointerException: Attempt to invoke interface method 'android.view.MenuItem android.view.MenuItem.setIntent(android.content.Intent)' on a null object reference
at com.bignerdranch.android.assignment2.UserAccountActivity.onCreateOptionsMenu(UserAccountActivity.java:22)
at android.support.v7.view.WindowCallbackWrapper.onCreatePanelMenu(WindowCallbackWrapper.java:85)
at android.support.v7.app.AppCompatDelegateImplBase$AppCompatWindowCallbackBase.onCreatePanelMenu(AppCompatDelegateImplBase.java:258)
at android.support.v7.app.AppCompatDelegateImplV7.preparePanel(AppCompatDelegateImplV7.java:1320)
at android.support.v7.app.AppCompatDelegateImplV7.doInvalidatePanelMenu(AppCompatDelegateImplV7.java:1600)
at android.support.v7.app.AppCompatDelegateImplV7.access$100(AppCompatDelegateImplV7.java:92)
at android.support.v7.app.AppCompatDelegateImplV7$1.run(AppCompatDelegateImplV7.java:131)
at android.os.Handler.handleCallback(Handler.java:739)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:135)
at android.app.ActivityThread.main(ActivityThread.java:5254)
at java.lang.reflect.Method.invoke(Native Method)
at java.lang.reflect.Method.invoke(Method.java:372)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:903)

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