Problem with Objectuinputstream

[viswanath sigamala]

Hi,

FileInputStream fis = new FileInputStream("c:\\nonav.log");
ObjectInputStream ois = new ObjectInputStream(fis);
String today = (String) ois.readObject();
byte[] bytedata= today.getBytes();

Above code i am getting below exception:

java.io.StreamCorruptedException: invalid stream header
at java.io.ObjectInputStream.readStreamHeader(ObjectInputStream.java:768)
at java.io.ObjectInputStream.<init>(ObjectInputStream.java:283)
at com.ibm.test.ReadZipPObjectinputstream.main(ReadZipPObjectinputstream.java:56)


Please help me in resolving the issue.

Thanks,
Viswanath

[Joe Ess]

Did you write nonav.log with an ObjectOutputStream? If not, you cannot read it with an ObjectInputStream.

[Prakash Subramanian]

Also check whether your ObjectOutputStream was flushed and closed properly.

[amitabh mehra]

Originally posted by Prakash Subramanian:
Also check whether your ObjectOutputStream was flushed and closed properly.

Prakash, can not flushing and closing of ObjectOutputStream cause this exception? I have doubts.

[Rob Spoor]

I don't think it caused this exception, but it can sure cause exceptions.

I once closed the backing OutputStream instead of the ZipOutputStream, and as a result the file was a corrupt ZIP file.

[viswanath sigamala]

Thanks Guys for Help.

[Jim Yingst]

I think it could possibly cause this exception - for example, if the full header never got written in the first place, because some of it was still in a buffer somewhere when the program terminated.