package com.heilong.other;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Iterator;
import java.util.Map;
import java.util.Set;
public class Demo2 {
public static void main(String[] args) {
HashSet<String> set = new HashSet<String>();
set.add("唐僧");
set.add("孙悟空");
set.add("猪八戒");
set.add("沙悟净");
Iterator<String> it = set.iterator();
while(it.hasNext()){
System.out.println(it.next());
}
System.out.println("===================================");
for(String e :set){
System.out.println(e);
}
System.out.println("===================================");
HashMap<String,String> map = new HashMap<String, String>();
map.put("孙悟空","001");
map.put("猪八戒","003");
map.put("沙悟净","002");
Set<Map.Entry<String,String>> entrys = map.entrySet();
for(Map.Entry<String, String> entry: entrys){
System.out.println("键:"+entry.getKey()+" 值:" + entry.getValue());
}
}
}