Java APIs

Dear forum,

I have some trouble with Java generics I cannot figure out myself.
What I have is a method that takes a Map<String, ? extends Object> as parameter.

Why can't I create an iterator for that map like that:

public static String[] getStrings(final Map<String, ? extends Object> p_tmInput)
{
    Iterator<Map.Entry<String, Object>> it = p_tmInput.entrySet().iterator();
    ...
}

Doing so my compiler says:

Type mismatch: cannot convert from Iterator<Map.Entry<String,capture#3-of ? extends Object>> to Iterator<Map.Entry<String,Object>>

My understanding of bounded wildcards in Java at the moment says that that map contains java.lang.String as keys and any objects deriveing from java.lang.Object.
I would be glad for any hint.


Thanks in advance and best regards,

Sebastian