Dec2Bin.java

public class Dec2Bin {

    /**
      * Program:    Dec2Bin.java by Chris Clarke
      * Created:    21.09.2009
      * Purpose:    Convert decimal to binary and display result
      **/

    public static String convertDec2Bin(String s) {
        int dec = Integer.parseInt(s);
        return toBinary(dec);
    }

    static String toBinary(int num) { return Integer.toBinaryString(num); }

    public static void main(String[] args) {
        if (args.length==1) {
            System.out.println( convertDec2Bin( args[0]));
        } else
            System.out.println("Use: \"java Dec2Bin <decimal number>\"");
    }
}