메타 문자 "\\S를 사용하여 공백이 아닌 문자를 일치시킬 수 있습니다. ".
예
import java.util.Scanner; import java.util.regex.Matcher; import java.util.regex.Pattern; public class Example { public static void main(String args[]) { //Reading String from user System.out.println("Enter a String"); Scanner sc = new Scanner(System.in); String input = sc.nextLine(); String regex = "\\S"; //Compiling the regular expression Pattern pattern = Pattern.compile(regex); //Retrieving the matcher object Matcher matcher = pattern.matcher(input); int count = 0; while(matcher.find()) { count++; } System.out.println("Number of characters (not spaces): "+count); } }
출력
Enter a String Hello how are you welcome to tutorialspoint Number of characters (not spaces): 37