📦 Wrapper Classes in Java 📦 #javadeveloper #coding

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Discover the magic of wrapper classes! Learn how these tiny Java classes wrap around primitive data types, unlocking powerful features like collections and null values. Dive into the world of Integer, Double, and more! 🧙‍♂️💡

Autoboxing and unboxing are concepts in Java that deal with the automatic conversion between primitive data types and their corresponding wrapper classes.

Autoboxing:

Definition: Autoboxing is the automatic conversion of a primitive data type to its corresponding wrapper class object.

Example: If you have an int primitive and you assign it to an Integer object, autoboxing occurs.

Unboxing:

Definition: Unboxing is the automatic conversion of a wrapper class object to its corresponding primitive data type.

Example: If you have an Integer object and you assign it to an int primitive, unboxing occurs.

Use Cases:

Autoboxing and unboxing are commonly used when working with collections like ArrayList or HashMap that can only store objects, not primitives. They allow you to store and retrieve primitive values conveniently.

They are also helpful when working with methods that expect objects but you have primitive values.

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