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  Attempt to invoke virtual method 'java.lang.String com.google.android.gms.auth.api.signin.GoogleSignInAccount.getIdToken()' on a null object reference com.pravin.yashlalit.msbtestudymaterial.Authentications.SigninActivity.FirebaseGoogleAuth

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  Check if java is installed windows

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  Java format use same value multiple times

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  No enclosing instance of type Foo is accessible. Must qualify the allocation with an enclosing instance of type Foo (e.g. x.new A() where x is an instance of Foo

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  How to declare an array list of a clas

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  Spigot custom join message

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  For loop in java as long as array

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