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Java Type-Casting

What is Typecasting?

Typecasting refers to the process of converting a variable of one data type 
into another.

 

There are two types of typecasting in Java

1. Implicit typecasting: This type of conversion occurs when you are converting a smaller data type to a larger data type.

Note: Implicit typecasting automatically perform by the java compiler.

 

Example

class ImplicitConversion {
    public static void main(String[] args) {
        int num = 10;
        double numDouble = num; // Implicit casting (widening) from int to double

        System.out.println("Integer: " + num);
        System.out.println("Double: " + numDouble);
    }
}

 

Output:

Integer: 10
Double: 10.0

 

2. Explicit typecasting: This conversion involves converting a larger data type to a smaller data type.

Note: As this may result in data loss.

 

Example

class ExplicitConversion {
    public static void main(String[] args) {
        double numDouble = 10.5;
        int num = (int) numDouble; // Explicit casting (narrowing) from double to int

        System.out.println("Double: " + numDouble);
        System.out.println("Integer: " + num);
    }
}

 

Output:

Double: 10.5
Integer: 10
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