Develop a program for implementation of implicit type casting in Java. Part-I

Implicit type casting, also known as type coercion, is a crucial concept in Java that allows for the automatic conversion of one data type to another without the programmer's intervention. In this article, we will explore the fundamentals of implicit type casting in Java and develop a program to demonstrate how it works.

Understanding Implicit Type Casting:

In Java, implicit type casting occurs when the data type of a value is automatically converted to another data type during an operation, assignment, or expression evaluation. This is done to ensure compatibility and prevent data loss when working with different data types.

Let's start by looking at a common example of implicit type casting in Java:

Code

int num1 = 10;

double num2 = 5.5;

double result = num1 + num2; // Implicit type casting from int to double

System.out.println("Result: " + result);

Output:

Result: 15.5

In this example, the int value num1 is implicitly cast to a double when it is added to num2. This is because double has a higher precision than int, and Java automatically promotes the int value to a double to avoid data loss.

Developing a Program to Demonstrate Implicit Type Casting:

Now, let's develop a program that demonstrates implicit type casting in a more comprehensive way. We'll create a program that calculates the average of two integers and displays the result as a double:

Code:

public class ImplicitTypeCastingDemo {

    public static void main(String[] args) {

        int num1 = 15;

        int num2 = 7;

        double average = (num1 + num2) / 2.0; // Implicit type casting from int to double

        System.out.println("Average: " + average);

    }

}

Output:

Average: 11.0

In this program, we calculate the average of num1 and num2. The result is assigned to the average variable, which is declared as a double. The implicit type casting occurs during the division operation, where both num1 and num2 are automatically converted to double before the division takes place.