使用正则表达式计算所有单词

/*n o w j a v a . c o m - 时  代  Java 提供*/

import java.util.Scanner;



public class CountAllWords {

    public static void main(String[] args) {

        Scanner scn = new Scanner(System.in);

        String[] input = scn.nextLine().split("\\W+");

        int counter = 0;

        for (int i = 0; i < input.length; i++) {

            counter++;

        }

        System.out.println(counter);

    }

}