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Can we cast a double value to a byte in java?
Java provides various datatypes to store various data values. It provides 7 primitive datatypes (stores single values) namely, boolean, byte, char, short, int, long, float, double and, reference datatypes (arrays and objects).
Casting in Java
Converting one primitive data type into another is known as type casting. There are two types of casting −
- Widening− Converting a lower datatype to a higher datatype is known as widening. It is done implicitly.
- Narrowing− Converting a higher datatype to a lower datatype is known as narrowing. You need to do it explicitly using the cast operator (“( )”).
Casting double to byte
Double is a higher datatype compared to byte. Therefore, double value will not be converted into byte implicitly, you need to convert it using the cast operator.
Example
import java.util.Scanner;
public class CastingExample {
public static void main(String args[]){
//Reading a double value form user
Scanner sc = new Scanner(System.in);
System.out.println("Enter a double value: ");
double d = sc.nextDouble();
//Converting the double value to byte
byte by = (byte) d;
//Printing the result
System.out.println("byte value: "+by);
}
}Output
Enter a double value: 102.365 byte value: 102
Updated on: 30-Jul-2019
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