What Do Angle Brackets () Mean in Java Generics?

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Understanding the Meaning of Angle Brackets (<>) in Java

In Java, the usage of angle brackets () generally pertains to generics. Generics are functionalities that can format methods, classes, and interfaces.

In the provided examples, such as "Pool","PoolFactory," and "ArrayList," the indicates the inclusion of a type parameter.

In class definitions like "Pool," a type parameter is declared. This parameter allows users to create instances of that class specifying a particular type. For instance, "Pool" uses the Pool class with String-specific attributes.

In generic interfaces, such as "PoolFactory," the type parameter determines the type of objects that can be created using the factory. In this case, "PoolFactory" would be used to create String objects using the "createObject()" method.

As for "ArrayList," it represents an ArrayList dynamically maintaining an array of specific types. The type parameter makes it possible to store different types of elements. For instance, "ArrayList" defines an ArrayList capable of holding integers.

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