package com.sample.test;

public class CommaStripper {

    public static void main(String[] args) {

        String testString = "how are,you,my friend,";
        CommaStripper stripper = new CommaStripper();
        System.out.println(stripper.stripCommas(testString));

    }

    private String stripCommas(String line){
        String finalString = null;
        finalString = line.replaceAll(",$", "").trim();
        return finalString;
    }

}