/**
	This method returns true is the given str is a number,
	otherwise false.

	@author: Dave Slemon
	@version 1.00
	@param str is a string 
	@return true if the str is a number other false
*/
 public static boolean isNumeric(String str) 
 {
        if (str == null) {
            return false;
        }
        try {
            double d = Double.parseDouble(str);
        } catch (NumberFormatException nfe) {
            return false;
        }
        return true;
}