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Thread: Why wont this method work?

  1. #1
    Junior Member
    Join Date
    Apr 2013
    Thanked 0 Times in 0 Posts

    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) ;
    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++) { 
    n = Character.getNumericValue(number);
    m = num.length()-1;
    x +=n*Math.pow(2,m);
    return x;

  2. #2
    Super Moderator pbrockway2's Avatar
    Join Date
    Jan 2012
    Thanked 206 Times in 182 Posts

    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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