java - How to retrieve object stored in map value? - 


set<entry<integer, inventorystock>> inventorydata= set<map.entry<integer,inventorystock>>) ois.readobject();   for( entry<integer, inventorystock> list:inventorydata) {              for(inventorystock stock:list)              if(stock!=null){             system.out.println("item id" + stock.getitemid()+"  "+stock);              map.putifabsent(stock.getitemid(), stock);               }

i picking inventorydata set .ser file , need access values of map (which inventorystock objects) , need assign map. showing error @ second enhanced loop:

error: can iterate on array or instance of java.lang.iterable in 2nd loop

please me fix code!

you can not iterate entry. entry pair of (key, value), (singular) inventorystock entry, have use getvalue.

for( entry<integer, inventorystock> entry : inventorydata) {     inventorystock stock = entry.getvalue();     if (stock != null) {         ...

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