Throws IOException

Question

What is a best way to write throwing IOException here?
Can I write try-catch, and after "catch" throw it?
Is this right?
I have no idea how to do it with if-clause.
/** Writes the given apartment data in the file. If the file already
exists, the old contents are overwritten.
Parameters:
apartment - the apartment to be written in the file
Throws:
IOException - if other problems arose when handling the file (e.g. the
file could not be written) */
        public Appartment writeAppartment(Appartment appartment)
              throws IOException {
             try {
                writeStream = new FileOutputStream(filepath);
                objectStream = new ObjectOutputStream(objectStream);
                objectStream.writeObject(appartment);
             } catch (Exception e) {
               String message ="Writing to file "+filepath+ " failed.";
               throw new IOException(message);
}

Answer 1

Since your method is defined as "throws IOException", why not just get
rid of the whole try/catch block. Let the caller of writeAppartment
catch it. You don't seem to be doing anything special with the
exception when your throwing it, like throwing a custom one, so just
let java throw it. Plus, what if there is a NullPointerException...it
would be thrown as an IOException?I see, I haven't understood that when the method is defined as
"throws IOException", it throws it "automatically".
So I haven't to do anything.
But when I call this "throws-method" I have to catch the Exception or
throw it forward.
Is that right???
was meant to be:
objectStream = new ObjectOutputStream(writeStream);jep, sorry there was an error in that line.