Problem with listview in android

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Android

Sir, I have created an android application with navigation drawer. When the user clicks the application should go for the new activity.For that I have coded this

if (id == R.id.maths) {
            Intent intent = new Intent(Main.this, Mathematics.class);
            startActivity(intent);
}

and it shifts to the new activity successfully. I want to add a list view in my new activity for that I have coded like this, for the blank activity inorder to show the list view

public class Mathematics extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.content_mathematics);
        String[] classes = {"A1","A2","A3","A4","A5","A6","A7","A8"};
        ArrayAdapter adapter = new ArrayAdapter<String>(this, R.layout.content_mathematics, classes);

        ListView listView = (ListView) findViewById(R.id.mathList);
        listView.setAdapter(adapter);
    }
}

I have also added list view in the xml file,

<ListView
     android:id="@+id/mathList"
     android:layout_width="match_parent"
     android:layout_height="wrap_content" >
 </ListView>

I have build-ed the application with zero warnings and zero errors but when I run the application the app crashes

Kindly help me with this sir

Thank you for your time sir

What I have tried:

I tried running my application using an emulator and the emulator shows black screen for hours. I referred tutorials point and modified the code but still the same case. I couldn't figure out since the application compiled with zero errors.