15. Collections and Generics
The chapter covers the Java Collections Framework and Generics, highlighting their architecture, usage, and best practices for efficient programming. It provides an overview of various collection types like List, Set, Map, along with their core interfaces and common methods. Additionally, it discusses Generics, including their syntax, wildcards, and best practices to ensure type safety and code reusability.
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Sections
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What we have learnt
- Collections group multiple elements into single units for effective data manipulation.
- Generics enhance type safety and eliminate the need for casting.
- Different collection interfaces (List, Set, Map) provide specific data handling options.
Key Concepts
- -- Collections Framework
- A unified architecture for representing and manipulating collections, providing interfaces such as List, Set, and Map.
- -- Generics
- A feature that allows the creation of classes, interfaces, and methods with placeholder types, ensuring type safety.
- -- List Interface
- An ordered collection that may contain duplicate elements, allowing for fast random access.
- -- Set Interface
- A collection that prohibits duplicate elements, featuring implementations like HashSet and TreeSet.
- -- Map Interface
- An object that maps keys to values, preserving unique keys for efficient data retrieval.
- -- Wildcards in Generics
- Placeholders that allow for a flexible handling of types in generic programming.
Additional Learning Materials
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