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Generic types and collections GUIs.pptx
- 1. PCC CS -503 GROUP NUMBER:13 Generic types & Collections GUIs
- 2. OUR MEMBERS AYUSH DEY ANIKETSINGH 11500219041 DEBJIT KAR 11500219031 11500219033 11500219036 AVIRUP PAL
- 3. CONCLUSION COLLECTION FRAMEWORK GENERICS Full discussion about thegenerics 01 Collection Framework hierarchy,advantages and much more 02 TABLE OF CONTENTS 03
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- 5. Definition: “A generictype is a generic class or interface that is parameterized over types.” GENERICS in JAVA Java Generics is a set of related methods or a set of similar types. Generics allow types Integer, String, or even user-defined types to be passed as a parameter to classes, methods, or interfaces. Generics are mostly used by classes like HashSet or HashMap.
- 6. ● Java Genericsdoes not support sub-typing. ● You cannot create generic arrays in Java Generics. Advantages Constraints
- 7. Generic method: Generic Javamethod takes a parameter and returns some value after performing a task. It is exactly like a normal function, however, a generic method has type parameters which are cited by actual type. This allows the generic method to be used in a more general way. The compiler takes care of the type of safety which enables programmers to code easily since they do not have to perform long, individual type castings. Types Of Generics in JAVA Generic classes: A generic class is implemented exactly like a non-generic class. The only difference is that it contains a type parameter section. There can be more than one type of parameter, separated by a comma. The classes, which accept one or more parameters, are known as parameterized classes or parameterized types.
- 8. This example showshow to print different types of arrays using the single Generic method: Single Generic Method
- 9. This example showhow to define a generic class. Generic Class
- 10. COLLECTION FRAMEWORK What is collection frameworkand it types And much more 02
- 11. ● A Collection(also known as Container) is an object that contains a group of objects treated as single unit ● Any type of objects can be stored, retrieved and manipulated as elements of collection What is a Collection
- 12. Collections Framework isan unified architecture for managing collection MAIN PARTS OF COLLECTION FRAMEWORK: ● Interfaces ○ Core interfaces defining common functionality exhibited by collections ● Implementations ○ Concrete classes of the core interface providing data structures ● Operations ○ Methods that perform various operations on collections Collection Framework Overview
- 13. Advantages of theCollection Framework Reduces performance Effort Increases performance Foster software rescue Provides interoperability between unrelated APIis Reduces the effort to learn APIs Reduces the effort required to design and implement APIs
- 14. An iterator isan object used to mark a position in a collection of data and to move from item to item within the collection SYNTAX: Iterator <variable> = <CollectionObject>.iterator(); ITERATOR
- 15. COLLECTIONS FRAMEWORKS IMPLEMENTATIONS SET LISTMAP HashSet ArrayList HashMap LinkedHashSet LinkedList LinkedHashMap TreeSet Vector Hashtable Tree Map
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- 17. LIST: List ofthings(classes that implement list) COLLECTION IMPLEMENTATIONS Set:Unique things(classes that implement set) Map: Things with unique ID(classes that implement map)
- 18. A list caresabout the index LIST
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- 22. A Set caresabout uniqueness, it doesn't allows duplicates SET
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- 32. Why Use Generics? Ina nutshell, generics enable types (classes and interfaces) to be parameters when defining classes, interfaces and methods. Much like the more familiar formal parameters used in method declarations, type parameters provide a way for you to re-use the same code with different inputs. CONCLUSION Why Use Collection in JAVA? The Java Collections Framework provides the following benefits: Reduces programming effort: By providing useful data structures and algorithms, the Collections Framework frees you to concentrate on the important parts of your program rather than on the low-level "plumbing" required to make it work.
- 33. Presented by : GROUP-13 MR. KAR MR.DEY MR.SINGH MR.PAL Thanks You