Difference Between Wrapper Class and Wrapper Object

Kalyani Badisha — Wed, 17 Dec 2025 10:15:57 +0000

Wrapper Class:-
A wrapper class is a predefined class in Java that wraps (converts) a primitive data type into an object.

Like int to Integerprimitive data types are can not move in the internet, wrapper classes are freely move in the internet, so the primitive data types are converted into wrapper classes to move in the internet easily.
Example:

Integer i;   // Integer is a wrapper class

Wrapper Object:-
A wrapper object is an instance of a wrapper class that actually stores the primitive value.

Wrapper object is used to store the values of the wrapper classes and the initialization is done in the same time only like

Integer i = 10; // wrapper object created

Example:

Integer i = Integer.valueOf(10); // wrapper object

Overview:
Wrapper class is a predefined class that converts a primitive into an object,
while a wrapper object is the actual instance of that class holding the primitive value.

Multithreading in java

Kalyani Badisha — Tue, 16 Dec 2025 09:30:23 +0000

What is multithreading:-
Multithreading is a process of executing multiple threads simultaneously.

It means multiple threads are running at the same time.

Like whenever we are opening an website then that time browser containing multiple threads(Internally it is containing multiple threads)like one thread is working for UI and one thread is for loading content and one for downloading the files.

So in that browser multiple threads are executing simultaneously.

Key Points:-
->Threads consumes less memory space and it gives the fast and efficient performance.
->Threads shares the common memory in between the threads.
->Threads are lightweight and consist of faster communication in between the threads

Examples:-

Banking Application:
-One user is checking balance
-Another user is withdrawing money
-Another is depositing money
All happen at the same time
Ticket Booking System:
-Multiple users booking same seat
-Only one user should succeed

This is my first Post in this community I hope you all will understood this concept and ask if you have any questions regarding this topic.

DEV Community: Kalyani Badisha

Difference Between Wrapper Class and Wrapper Object

Multithreading in java