gistfile1.txt

public class MainActivity extends AppCompatActivity {
    ListView list;
    EditText text;
    Button addButton;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        list = (ListView) findViewById(R.id.listView);
        text = (EditText) findViewById(R.id.editText);
        addButton = (Button) findViewById(R.id.button);
    }
}