老师，按照这种方式编译器报错啊。

来源：3-1 监听器初探

慕的地4577400

2018-03-20 13:26:17

public class MainActivity extends AppCompatActivity {

private TextView textView;
private Button button;
@Override
protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
textView = (TextView)findViewById(R.id.text);
button = (Button)findViewById(R.id.button);

}

class buttonListener implements View.OnClickListener
{
@Override
void OnClick(View view)
{
System.out.println("hello");
}
}
}