Convert Hexadecimal to Decimal

In this section, you will learn to change hexadecimal number into decimal. The java.lang package provides the functionality to convert a hexadecimal number into decimal.

Code Description:

This program takes a hexadecimal number at console and converts it into a decimal number using parseInt() method. This method parses the string value as a signed integer in the radix specified by the second argument. Here the second argument is 16 to convert a hexadecimal into a decimal number.

parseInt():
This method takes two arguments: hexadecimal and 16. It converts a hexadecimal number into a decimal number.

Here is the code of this program:


import java.io.*;

import java.lang.*;



public class  HexadecimalToDecimal{

  public static void main(String[] args) throws IOException{

  BufferedReader bf = new BufferedReader(new InputStreamReader(System.in));

  System.out.println("Enter the Hexadecimal number:");

  String str= bf.readLine();

  int i= Integer.parseInt(str,16);

  System.out.println("Decimal:="+ i);

  }

}

Download this program:

Output of this program.

C:\corejava>java HexadecimalToDecimal
Enter the Hexadecimal number:
32
Decimal:=50
C:\corejava>

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