Question

I have a text (String) an I need to get only digits from it, i mean if i have the text:

“I’m 53.2 km away”, i want to get the “53.2” (not 532 or 53 or 2)

I tried the solution in Extract digits from a string in Java. it returns me “532”.

Anyone have an idea for it?

Thanx

Answer 1

You can directly use a Scanner which has a nextDouble() and hasNextDouble() methods as below:

        Scanner st = new Scanner("I'm 53.2 km away");
        while (!st.hasNextDouble())
        {
            st.next();
        }
        double value = st.nextDouble();
        System.out.println(value);

Output: 53.2