Android : Android Error [Attempt to invoke virtual method 'void android.app.ActionBar' on a null obj

Android : Android Error [Attempt to invoke virtual method 'void android.app.ActionBar' on a null obj

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Attempt to invoke virtual method on a null object reference
Attempt to invoke virtual method on a null object reference
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[SOLVED]Attempt To Invoke Virtual Method (OnClickListener) On a Null Object Reference

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