Develop a program for implementation of Wrapper Class to convert object into primitive in java

Table of Contents

1. Introduction
2. Wrapper Classes in Java
3. Implementation of Wrapper Class
4. Java Code
5. Code Output
6. Conclusion

Introduction

In the world of diploma engineering, understanding programming languages like Java is essential. Java is widely used for its simplicity and versatility, making it a great choice for diploma students.

Wrapper Classes in Java

Wrapper classes in Java are used to convert primitive data types into objects and vice versa. They provide a way to encapsulate and manipulate primitive data types as objects. This can be particularly useful when working with data structures and APIs that require objects instead of primitives.

Implementation of Wrapper Class

Let's implement a program in Java that demonstrates the use of wrapper classes to convert an object into a primitive data type. In this example, we will convert an Integer object into an int primitive.

Java Code

import java.util.*;

public class WrapperClassExample {
    public static void main(String[] args) {
        // Create an Integer object
        Integer myInteger = new Integer(42);
        
        // Convert Integer to int using intValue()
        int myInt = myInteger.intValue();
        
        // Print the converted value
        System.out.println("Converted int: " + myInt);
    }
}
        

Code Output

When you run the above Java program, you will get the following output:

Converted int: 42
        

Conclusion

In this article, we discussed the importance of Java for diploma students pursuing MSBTE Diploma in engineering. We also explored the concept of wrapper classes and their role in converting objects into primitive data types.

By implementing the provided Java code, you can gain hands-on experience in using wrapper classes to perform this conversion. This knowledge will be valuable in various programming scenarios, especially when working with Java's extensive standard library and third-party APIs.