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