Hiding StatusBar in Android

MainActivity.java:

package com.ram.hidingstatusbar;

import android.app.Activity;
import android.os.Bundle;
import android.view.WindowManager;

public class MainActivity extends Activity {

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);

getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
WindowManager.LayoutParams.FLAG_FULLSCREEN);

setContentView(R.layout.activity_main);
}

}