Okay i found a solution :)

"Typically, applications receive asynchronous responses in some sort
of
callback method. Java does not have a way of passing method pointers
around, so it usually accomplishes this through interfaces. The
provider of
the asynchronous resource defines a public interface that you would
implement if you needed an asynchronous response. When asynchronous
events occur, the event source calls a method on the provided
interface
instance."

That means in order to make the application work properly u have to
call the next requestcallback after the first one finishes. In this
way u guarantee take the results u want plus there isnt any waiting
time. ;)

ty all for the replies.

Another solutions are welcome also.
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