HashMap order in a file

Hi all
Until now in my program i use a HashMap collection to store my objects. The problem i have now is that the objects are too many (over 1.000.000) so keeping them in memory in a hashmap collection is impossible. So the solution (?) is to keep them in a file and retrieve the objects i want from the file directly, but i would like to have the ability to retrieve information from the file in constant time as before. Is that possible, can somehow have a hashmap in the file? If yes can you tell me how or post a link with information?
thank you in advance

Pitelk wrote:
Hi all
Until now in my program i use a HashMap collection to store my objects. The problem i have now is that the objects are too many (over 1.000.000) so keeping them in memory in a hashmap collection is impossible. Not necessarily. Have you tried, or are you assuming?
So the solution (?) is to keep them in a file and retrieve the objects i want from the file directly, but i would like to have the ability to retrieve information from the file in constant time as before. Is that possible, can somehow have a hashmap in the file? If yes can you tell me how or post a link with information? If keeping your objects in memory is unwieldy or impossible, and you want to retrieve them randomly by some key, then you probably want a database. There's one included with the JDK download, or you can download a few one like Postgres or MySQL.

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flex/sdk/trunk/frameworks/build.xml
flex/sdk/trunk/frameworks/projects/airframework/build.xml
flex/sdk/trunk/frameworks/projects/flash-integration/build.xml
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