Question

I would like to know the regex for splitting up the decimal number from a string say

str = "COD Amount = 333.98"

in the above string value I just need only the decimal values ie 333.98.

Answer 1

It’s mandatory to use regex? If it’s not then you can use:

public class Split {
public static void main(String[] args) {
    String line = "COD Amount = 333.98";
    String[] array = line.split("=");
    double amount = Double.parseDouble(array[1]);
    System.out.println(amount);
}
}

Hope it helps.

EDIT

With regex:

import java.util.regex.Pattern;
import java.util.regex.Matcher;

public class Split {
public static void main(String[] args) {
    String line = "COD Amount = 333.98";
    Pattern p = Pattern.compile(".+= (\\d+\\.\\d+)");
    Matcher m = p.matcher(line);
    if (m.find()) {
        System.out.println(m.group(1));
    }
}
}

But make sure that all your strings are in the same format: [code] [description] = [number]

(I’m still thinking that the first solution is most appropriate)

EDIT 2

Since your input is like this:
"COD Amount = 333.98, Coverage = $564.000" (you should provide us the entire format of your lines in the original question)

you can combine the two previous solutions:

import java.util.regex.Pattern;
import java.util.regex.Matcher;

public class Split {
public static void main(String[] args) {
    String line = "COD Amount = 333.98, Coverage = $564.000";
    String[] array = line.split(",");

    for (int i = 0; i < array.length; i++) {
        Pattern p = Pattern.compile(".+= \\$?(\\d+\\.\\d+)");
        Matcher m = p.matcher(array[i]);
        if (m.find()) {
            System.out.println(m.group(1));
        }
    }
}

}