android button

public class MainActivity extends Activity {

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        
        Button button=(Button)findViewById(R.id.button1);
        button.setOnClickListener(new ButtonClickListener());

    }
        





        private final class ButtonClickListener implements View.OnClickListener{
        	// private final class ButtonClickListener implements View.OnClickListener{
        	public void onClick(View v) {
				
			}
        }
  





    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        getMenuInflater().inflate(R.menu.activity_main, menu);
        return true;
    }
}