package com.test;

import java.util.Arrays;
import java.util.List;

public class CommaSeparatedString {
	private static final String SEPARATER=",";
	public static void main(String[] args) {

		List<String> listCountries = Arrays.asList("US", "IN", "NP","NL");
		StringBuilder buildCSV= new StringBuilder();
		for (String string : listCountries) {
			buildCSV.append(string);
			buildCSV.append(',');
		}
		System.out.println(buildCSV.toString()); //US,IN,NP,NL,
		String csv=buildCSV.toString().substring(0,buildCSV.toString().length()-SEPARATER.length());
		System.out.println(csv);	//US,IN,NP,NL

		String csv2 = listCountries.toString().replace("[", "").replace("]", "").replace(", ", ",");
		System.out.println(listCountries.toString());	//[US, IN, NP, NL]
		System.out.println(csv2);	//US,IN,NP,NL
	}
}