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Super keyword in #Java  
Super keyword in java is a reference variable that is used to refer parent class object.Whenever you create the instance of subclass, an instance of parent class is created implicitly i.e. referred by super reference variable.for more visit:- http://goo.gl/8CDM5W
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The #ArrayList class extends #AbstractList and implements the List interface. ArrayList supports dynamic arrays that can grow as needed.
For more visit:- http://w2class.com/
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#Collections in #java is a framework that provides an architecture to store and manipulate the group of objects.This framework has several useful classes which have tons of useful functions which makes a programmer task super easy.
visit:- http://w2class.com/collections-in-java/
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Basic ‪#Datatypes‬ In ‪#Java‬ - ‪w2class‬
Variables are nothing but reserved memory locations to store values. This means that when you create a variable you reserve some space in memory.
Read more:-  http://w2class.com/java-datatypes/
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‪#‎Java‬ ‪#‎Object‬ & ‪#‎Classes‬ ‪#‎tutorial‬
http://ow.ly/WrEdT
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The screenOrientation is the attribute of activity element. The orientation of android activity can be portrait, landscape, sensor, unspecified etc. You need to define it in the AndroidManifest.xml file. For example:

<activity 
android:name=”com.example.screenorientation.MainActivity” 
android:label=”@string/app_name” 
android:screenOrientation=”landscape” 


Visit:- http://w2class.com/android-screen-orientation-example/
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