OOP-JAVA Practical 15

• PPS(C)
• JAvA

• Aim: Write the bin2Dec (string binary String) method to convert a binary string into a decimal number. Implement the bin2Dec method to throw NumberFormatException if the string is not a binary string.
• Code:

  import java.util.Scanner;
  public class practical15 {
      public static int bin2Dec(String binary) throws NumberFormatException{
          int decimal;
          for(int i=0;i<binary.length();i++){
              if (binary.charAt(i)>'1') {
                  throw new NumberFormatException("Enter valid Binary number");
              }
          }
          decimal=Integer.parseInt(binary, 2);
          return decimal;
      }
      public static void main(String[] args) {
          Scanner s= new Scanner(System.in);
          System.out.println("Enter Binary number:");
          String str=s.nextLine();
          try {
              System.out.println("Decimal value : "+bin2Dec(str));
          } catch (Exception e) {
              System.out.println(e);
          }
      }
  }

• Output:
  

Practical 14 Practical 16