提取

[java]代码库

public class tiqu {
    public static void main(String args[]) {
        String str = "tengsir,admin,jack,rose";
        int istr = str.length();
        String str1 = str.replaceAll("[,]", "");
        int istr1 = str1.length();
        System.out.println("人名个数是：" + (istr - istr1));
    }
    }