HashSet建立及用迭代器遍历

输入三个字符串，并看里边是否含有“Kobe”。

import java.util.Scanner;import java.util.HashSet;import java.util.Iterator;public class Main{    @SuppressWarnings("unchecked")public static void main(String[] args){    //write your own codes    HashSet<String> set = new HashSet();    Scanner scan = new Scanner(System.in);    for(int i=0;i<3;i++){    String s = scan.next();    set.add(s);    }    Iterator<String> it = set.iterator();    boolean flag = false;    String str = "Kobe";    while(it.hasNext()){    String st = it.next();    if(st.equals(str)){    flag = true;    break;    }    }    System.out.println(flag);}}