Suggestions to remove a serialized instance of the object

Hi guys,.

My scenario is that I wrote a few cases of my class serializable for an outputstream and in a file.

I am looking for some suggestions on how I could possibly remove instances of the file. I did some research on google
but couldn't find anything. I don't know how to demarshall an object instance back into memory using an ObjectInputStream and the readObject
method. But I don't have any idea how I could delete the instance of the data file, a fortiori if it is still possible.

Any pointers in the right direction would be really appreciated.
I not looking for the code, a few suggestions.

Thank you very much
B

Published by: Boeing737 on October 14, 2010 13:00

802563 wrote:
Gotcha. So my final question is, if ObjectOutputStream simply adds an ArrayList to any ArrayLists moult existing so what could I do to overwrite the file.

Close the stream, and open a new one.

I'd read in the ArrayList, remove the file, recreate and then write the ArrayList.

It depends on. If you still have the AL in memory, there is no need to re-read the file. And you don't need to explicitly delete the file. Just create a new OutputStream for her, without setting append to true, will delete the old one.

OR, is there another class, I could watch that will allow me to overwrite the ArrayList in the file?

No, there is no utility that I know. Even if there were, it would have to write the entire file in any case, unless you agree with it leaves the old version of the AL, and munging just header data so that it is ignored on read.

Really, I think you're overloading it. :-)

Tags: Java

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