What is the Difference Between Wrapper Class and Primitive Type in Java?

The main difference between a wrapper class and a primitive type in Java is that a wrapper class is used to convert a primitive type to an object, while a primitive type is a predefined data type provided by Java. Here are some key differences between the two:

1. Memory Storage: Primitive types are stored as values, usually in the stack memory, while wrapper classes are stored as objects on the heap with a reference variable in the stack.
2. Null Values: Wrapper classes can hold null values, but primitive types cannot.
3. Object-Oriented Programming: Wrapper classes help the Java program be completely object-oriented, while primitive data types focus on variable values without any additional methods.
4. Speed: Primitive types are faster compared to wrapper classes, as there is no overhead of methods or object.
5. Conversion: Wrapper classes are used to convert primitive data types to objects, and primitives can be created from wrapper classes using a process called unboxing.

In summary, wrapper classes in Java provide a mechanism to convert primitive data types to objects, allowing for more flexibility and object-oriented programming. On the other hand, primitive types are simpler and faster to use, with a smaller memory footprint and no ability to hold null values.

Comparative Table: Wrapper Class vs Primitive Type in Java

Here is a table comparing the differences between Wrapper Classes and Primitive Types in Java:

In summary, wrapper classes are used to convert primitive types to objects and are useful for object-oriented programming, I/O operations, and null values. Primitive types are faster and simpler, but do not support object-oriented features like null values and I/O operations.