java中
Iterator it=wordsmap.entrySet().iterator();
while(it.hasNext())
{
Map.Entry<String,Integer> myentry=(Map.Entry<String,Integer>)it.next();
Object mykey=myentry.getKey();
}
java中map<string,int>
原文：http://www.cnblogs.com/wuxiangli/p/6060659.html
