Map的常见遍历方式

Map<String,String>map=newHashMap();

for(Map.Entryentry:map.entrySet()){

Objectkey=entry.getKey();

}

Maphashmap=newHashMap();

Setset=hashmap.entrySet();

Iteratoriterator=set.iterator();

while(iterator.hasNext(){

Map.Entrymapentry=(Map.Entry)iterator.next();

System.out.println(mapentry.getkey()+"/"+mapentry.getValue());

}

Setkeys=map.keySet();

if(keys!=null){

Iteratoriterator=keys.iterator();

while(iterator.hasNext()){

Objectkey=iterator.next();

Objectvalue=map.get(key);

}

}