📄️ Generics
Generics in Java are a way to create classes, interfaces, and methods that can work with different types while ensuring type safety. They provide flexibility and reusability in code by allowing you to write classes or methods that can operate on a variety of data types.
📄️ Generics vs. Raw Types
In Java, when working with collections or classes that can handle various types, you often encounter a choice between using generics or raw types. Understanding the distinction is crucial for writing robust and type-safe code.
📄️ Generic Classes
A generic class in Java is a class that can work with different data types without sacrificing type safety. It is declared with one or more type parameters, which act as placeholders for the actual data types used when creating instances of the class.
📄️ Generic Methods
Generic methods in Java are methods that introduce their own type parameters. Similar to generic classes, generic methods enable you to write code that can operate on different data types while maintaining type safety.
📄️ Bounded Type Parameters
Bounded type parameters allow you to restrict the types that can be used as arguments in generics. You can specify that the type parameter must be a subtype of a certain class or implement a specific interface. By using bounded type parameters, you enhance the compile-time safety of your code and ensure that your generic components can be applied to a broader range of scenarios, meeting specific criteria for the types involved.
📄️ Generic Interfaces
A generic interface in Java is an interface that declares one or more type parameters. These parameters act as placeholders for the actual data types that implementing classes will use. Similar to generic classes and methods, generic interfaces enhance flexibility and promote type safety.
📄️ Type Parameters and Wildcards
Type Parameters: