Android UI - Hiding TitleBar for an Acticity or Entire Application

NoTitleBar

>>>> Type 1 
themes.xml
----------
<?xml version="1.0" encoding="utf-8"?>
<resources>
    <!-- use the Android Light theme as the base for our own theme -->
    <style name="MySuperTheme" parent="@android:style/Theme.Light">
        <!-- hide the Window Title -->
        <item name="android:windowNoTitle">true</item>
        <!-- Other Styles -->
    </style>
</resources>

>>>> Type 2 
Activity.java
-------------
  @Override public void onCreate(Bundle state) {
    ...
      requestWindowFeature(Window.FEATURE_NO_TITLE);
  }

>>>> Type 3 
AndroidMAnifest.xml
-------------------
- Entire Application
<application 
    android:icon="@drawable/icon" 
    android:label="@string/app_name" 
    android:theme="@android:style/Theme.NoTitleBar.Fullscreen">


- Activity Specific
<activity 
  android:name=".MyMainClass"
    android:label="@string/app_name"
    android:theme="@android:style/Theme.NoTitleBar"/>