Java - Convert comma-separated String to a List and List to a comma-separated String
In this section, we will show you h ow to c onvert comma-separated String to a List and vice versa . 1. Comma-separated String to List Main.java import java.util.Arrays ; import java.util.List ; public class Main { public static void main ( String [] args) { String str = "India,USA,Japan,Russia" ; //Remove whitespace and split by comma List < String > result = Arrays . asList ( str .split( " \\ s*, \\ s* " )); System . out .println( result ); } } Console Output: [India, USA, Japan, Russia] 2. List to Comma-separated String Main.java import java.util.Arrays ; import java.util.List ; public class Main { public static void main ( String [] args) { List < String > list = Arrays . asList ( "India" , "USA" , "Japan" , "Russia" ); String result = String . join ( "," , list ); System . out .println( result ); } } Console Outp