Java Exercises: Convert a decimal number to hexadecimal number
Java Basic: Exercise-20 with Solution
Write a Java program to convert a decimal number to hexadecimal number.
Decimal number: The decimal numeral system is the standard system for denoting integer and non-integer numbers. It is also called base-ten positional numeral system.
Hexadecimal number: Hexadecimal is a positional numeral system with a radix, or base, of 16. It uses sixteen distinct symbols, most often the symbols 0-9 to represent values zero to nine, and A, B, C, D, E, F (or alternatively a, b, c, d, e, f) to represent values ten to fifteen.
Test Data:
Input a decimal number: 15
Pictorial Presentation: Decimal to Hexadecimal number
Sample Solution:
Java Code:
import java.util.Scanner;
public class Exercise20 {
public static void main(String args[])
{
int dec_num, rem;
String hexdec_num="";
/* hexadecimal number digits */
char hex[]={'0','1','2','3','4','5','6','7','8','9','A','B','C','D','E','F'};
Scanner in = new Scanner(System.in);
System.out.print("Input a decimal number: ");
dec_num = in.nextInt();
while(dec_num>0)
{
rem = dec_num%16;
hexdec_num = hex[rem] + hexdec_num;
dec_num = dec_num/16;
}
System.out.print("Hexadecimal number is : "+hexdec_num+"\n");
}
}
Sample Output:
Input a decimal number: 15 Hexadecimal number is : F
Flowchart:
Java Code Editor:
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Previous: Write a Java program to convert a decimal number to binary number.
Next: Write a Java program to convert a decimal number to octal number.
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