hexadecimal number to octal number java

import java.util.Scanner; public class OctalToHexadecimal { public static void main(String[] args) { String strOctalNumber, strHexNumber; Scanner sc = new Scanner(System.in); System.out.print("Please enter octal number: "); strOctalNumber = sc.nextLine(); int decimalNumber = Integer.parseInt(strOctalNumber, 8); strHexNumber = Integer.toHexString(decimalNumber); System.out.print("Hexadecimal value of " + strOctalNumber + " is: \n"); System.out.print(strHexNumber); sc.close(); } }

hexadecimal to octal in java

import java.util.Scanner;
public class HexadecimalToOctal
{
   public static void main(String[] args)
   {
      int decimalNumber, a = 1, b;
      int[] octalNumber = new int[100];
      Scanner sc = new Scanner(System.in);
      System.out.print("Please enter a hexadecimal number: ");
      String strHexNumber = sc.nextLine();
      // converting hexadecimal number to decimal number
      decimalNumber = hexToDecimal(strHexNumber);
      // converting decimal to octal
      while(decimalNumber != 0)
      {
         octalNumber[a++] = decimalNumber % 8;
         decimalNumber = decimalNumber / 8;
      }
      System.out.print("Octal number is: ");
      for(b = a - 1; b > 0; b--)
      {
         System.out.print(octalNumber[b]);
      }
      System.out.print("\n");
      sc.close();
   }
   public static int hexToDecimal(String str)
   {
      String strDigits = "0123456789ABCDEF";
      str = str.toUpperCase();
      int value = 0;
      for(int a = 0; a < str.length(); a++)
      {
         char ch = str.charAt(a);
         int deci = strDigits.indexOf(ch);
         value = 16 * value + deci;
      }
      return value;
   }
}

Posted by: Guest on October-30-2020

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