在两个集合之间搜索公共字符串

//package com.nowjava;
/*n o w  j a v a  . c o m 提 供*/

import java.util.Set;


public class Main {

    public static String searchForCommonString(Set<String> s1,

            Set<String> s2) {

        String matched = "";

        for (String s1Word : s1)

            if (s2.contains(s1Word)) {

                matched = s1Word;

                break;

            }

        return matched;

    }

}/*N o w J a v a . c o m - 时  代  Java 提 供*/