Multiple instances of FileOutputStream

Question

Hi, I'm learning how to use Java's multithreading features. I created a class called "ObjectMaker". An instance of this class serializes some objects into a file, using a FileOutputStream (inside an ObjectOutputStream) for writing. In the mean time an other object of another class deserializes those objects reading from the file. Each concurrent access to the file (for writing,reading) is synchronized. Here's the problem:[ u]if each writer has its own FileOutputStream, then the concurrent writing on the file doesn't work (despite of every writer is synchronized on the same object), and the reader aren't able to read anything from the file; if the FileOutputStream is static (every instance share the same FileOutputStream reference) everything works. I read on Documentation that some OS "allow a file to be opened for writing by only one FileOutputStream (or other file-writing object) at a time" .But it also says that I would recive an exception from FileOutputStream if I try to open a file for writing that is already open by another FileOutputStream....and It doesn't happen, no exception are thrown.Then here is the problem:It's possible to manage Multiple instances of FileOutputStream linked on the same file?

Answer 1

Hello Joseph,
Have u been successful on the installation.
There were no replies after yours.
Can you please let me know about installing 2 MDS instances on the same host.
If you have any document you followed please mail me to [email protected]
It will be more helpful as the dead line to this is killing me.
Regards,
VishnuM