#104 Collection Framework | Data Structure In java | Array List | Collection | List | Set | Queue

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In this video tutorial you can understand the concept of Data Structure ( Collection Framework) in Java Programming and also Under Stand the Concept of DS.

Collection Framework:-
1. It is used to achieve the Data Structure functionality in java.
2. Data Structure is the concept which facilities us to store the in organized manger.
3. It was introduced in JDK1.2.
4. Before jdk1.2 we also achieve the data structure functionality, but they are not a framework now they are called legacy collection.
5. Collection represent group of object known as element, the object could be homogenous or heterogeneous.
6. Why collection – so that we can further perform some operation on that – maximum, short , mail.
7. Difference between collection(array list) and array – array is collection of homogenous type of data but collection have homogenous as well as heterogeneous. Once we are creating the array it’s size became fixed and we can not dynamically increase and decrease the size of array where as in collection framework it is possible. We can crate the array by both ways without new and with new but in case collection we are only using new keyword.
int []=new int[10];
Student []=new Student[10];
Object []=new Object[10000];
API:- set of inbuilt libraries or predefined functionality in any language. Whose from is varies from language to language. In c and C++ it is in the form header file and in java it is in the form of classes interfaces and package.
Framework :- It is set of API which work on the predefined algorithm and targeted to specific domain. Framework made the task easy.
Framework Specific domains.
Collection---------------------------------------------------D.S
JDBC----------------------------------------------------------Database connectivity
JEE------------------------------------------------------------WebApp & Enterprise App
Struts----------------------------------------------------------MVC
Hibernate……………………………………………………………..ORM
Spring……………………………………………………………………AOP & IOC etc.
Advantage:- It is use the simplify the development and maintenance of application software. Framework never wrong output because it is already tested.

All the collection framework API are found in java. util. package.
Depending on behaviour collection API’s are categorised in so may parts.
1. List
2. Set
3. Queue
4. Map
From coding point of view collection is the interface and collections is the class.


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