字符串中的单词数代码java

class Main {
    public static  int totally(String s){
        int len = s.length();
        if (len==0){
            return  0;}
        int count = 0;
        String[] s1=s.split(" ");
        for (String r:s1){
            if(r.length()!=0){
                count++;
            }
        }

        return count;

    }


    public static void main(String[] args) {
    int a=totally("Hello, my name is white deer");
    System.out.println(a);


                }
            }