Reading/writing object & other data to a file

[Erin K]

How does one read/write a file with a serialized object, then some
other data in it, so that after one reads the object, the next byte
read is whatever came after the object in the file? I want to do
something like
Writing:
FileOutputStream fos = new FileOutputStream(myfile);
ObjectOutputStream oos = new ObjectOutputStream(fos);
oos.writeObject(some object);
for(a bunch of bytes) {
fos.write(next byte);
}

Reading:
FileInputStream fis = new FileInputStream(myfile);
ObjectInputStream ois = new ObjectInputStream(fis);
ois.readObject();
while(fis isn't empty) {
fis.readByte();
}

but I am pretty sure that the first call to readByte will go from the
beginning of the file, not after the object like I want it to.

 

[Chris Uppal]

FileInputStream fis = new FileInputStream(myfile);
ObjectInputStream ois = new ObjectInputStream(fis);
ois.readObject();
while(fis isn't empty) {
fis.readByte();
}

Don't read() from fis, but from ios -- ObjectInputStream supports the usual
collection of read() methods inherited from InputStream.

-- chris

P.S. Today seems to be IO day ! This is my fifth or sixth posting on the
subject already, and it's only lunchtime...

 

[William Brogden]

How does one read/write a file with a serialized object, then some
other data in it, so that after one reads the object, the next byte
read is whatever came after the object in the file? I want to do
something like
Writing:
FileOutputStream fos = new FileOutputStream(myfile);
ObjectOutputStream oos = new ObjectOutputStream(fos);
oos.writeObject(some object);
for(a bunch of bytes) {
fos.write(next byte);
}

Just write the byte[] object - fast, simple, and preserves the size of the
array