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Thread: Why wont this method work?

  1. #1
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    Default Why wont this method work?

    I'm trying to create a method that takes a binary number as a string parameter and then prints out the decimal equivalent. For some reason my code isn't working but I feel like I am extremely close!
    import java.util.Scanner;
     
    public class Question1 {
     
    public static void main(String[] args) {
     
    Scanner input = new Scanner(System.in);
     
    System.out.println(" Enter a binary number ");
     
    String n= input.nextLine();
     
    int hey = binaryToDecimal(n) ;
     
    System.out.println(hey);
     
    }
     
    public static int binaryToDecimal(String num) {
     
    char number ;
     
    int n;
     
    int x = 0;
     
    int m=0;
     
    for(int i=0;i<=num.length()-1;i++) { 
     
     
    number=num.charAt(i);
     
    n = Character.getNumericValue(number);
     
    m = num.length()-1;
     
     
     
    x +=n*Math.pow(2,m);
     
    m--;
     
     
     
     
     
     
    }
     
    return x;
     
     
     
     
     
     
    }
     
     
    }


  2. #2
    Super Moderator pbrockway2's Avatar
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    Default Re: Why wont this method work?

    The code is quite difficult to follow. Perhaps you could edit your post to remove redundant empty lines and correct the indentation.

    What is m supposed to represent in the binaryToDecimal() method? (In general it is a good idea to make variables as descriptive as possible) And what value should m have each time around the loop?

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