Getting a double out of a string

Question

i have a string containing the following: \"Did It Your Way, 11.95 The History of Scotland, 14.50, Learn Calculus in One Day, 29.95\" is there any way to get the doubles fro

Answer 1

Java provides Scanner which allows you to scan a String (or any input stream) and parse primitive types and string tokens using regular expressions.

It would likely be preferrable to use this rather than writing your own regex, purely for maintenance reasons.

Scanner sc = new Scanner(yourString);
double price1 = sc.nextDouble(), 
       price2 = sc.nextDouble(), 
       price3 = sc.nextDouble();

Answer 2

Use regular expressions to extract doubles, then Double.parseDouble() to parse:

Pattern p = Pattern.compile("(\\d+(?:\\.\\d+))");
Matcher m = p.matcher(str);
while(m.find()) {
    double d = Double.parseDouble(m.group(1));
    System.out.println(d);
}