Java examples for Collection Framework:Array Join
array To Comma Separated String
import java.util.List; import javax.faces.application.FacesMessage; import javax.faces.context.FacesContext; public class Main{ public static void main(String[] argv) throws Exception{ String[] stringArray = new String[]{"1","abc","level",null,"java2s.com","asdf 123"}; System.out.println(arrayToCommaSeparatedString(stringArray)); }// w w w . j a v a 2s . c o m public static String arrayToCommaSeparatedString(String[] stringArray) { StringBuilder result = new StringBuilder(); int count = 0; for (String value : stringArray) { if (count > 0) { result.append(","); } result.append(value); count++; } return result.toString(); } }