collection is a interface impplemented by all other
interfaces like List,set..where as collections is not a
class.But its a Framework.Harikrishna if u have any
confeusion then go thru with sun java tutorial
Harikrishna is right about Collections class...Collections
class is a member of Java Collections Framework.. Sandeep
Tyagi u can find that in sun java tutorial..
what is the difference between collection class vs
collections interface ? not as colection and collections
A collection (sometimes called a container) is an object
that groups multiple elements into a single unit.
Collections are used to store, retrieve and manipulate data,
and to transmit data from one method to another. Collections
typically represent data items that form a natural group,
like an order (a collection of order lines), a mail folder
(a collection of messages), or a telephone directory (a
collection of name/phone-number pairs).
Collection is the root interface in collection
hierarchy,groups multiple elements into a single unit, it
allows duplicate & non-duplicate elements which may be
ordered or unordered.
Collections is a class which extends Object class & it
consists exclusively static methods .It is a member of Java
Collections Framework.Collections are used to store,
retrieve, manipulate, and communicate aggregate data
Collection is an interface which can be implemented the
List, Set,Sorted Set,and Queue. Where as Collections is an
utility class which contain the utility methods such as
sorting etc.
Collection is the interface. which can be implemented
List,set,Queue.This interface contain only instance methods.
Collection is the class .This class contain utility methods
such as all algorithm oriented methods.This class contain
only static methods.
we know that every java prog must follows OOPS Principles.
Anybody can answer, HOW THE FOLLOWING PROGRAM FOLLOWS OOPS
CONCEPTS i.e, Inheritance,Polymarphism,Encapsulation?
class a{
public static void main(String args[]){
System.out.println("Hello World");
}
}
Does a class inherit the constructor of its super class?if
it does, how can you hide that constructor? if it doesnot
how can you call it from the sub class?
In Inheritence concept, i have a static method in super
class and i am inheriting that class to one sub class.in
that case the static method is inherited to sub class or
not????
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