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Asked: 2026-05-26T06:55:09+00:00

I want to write multiple objects to a file, but the problem is that

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I want to write multiple objects to a file, but the problem is that I dont have all the objects to write at once. I have to write one object and then close the file, and then maybe after sometime I want to add another object to the same file.

I am currently doing it as
FileOutputStream("filename", true)
so that it will append the object to the end of file and not overwrite it. But I get this error :

java.io.StreamCorruptedException: invalid type code: AC

any ideas how can I solve this issue ?

Thanks,

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1 Answer

  1. Editorial Team

    You can’t append different ObjectOutputStreams to the same file. You would have to use a different form of serialization, or read the file in and write out all the objects plus the new objects to a new file.

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