CODEWITHSUNDEEP
javafile-iobufferedreaderioexception
InformatikBabo
InformatikBabo

Reputation: 520

Exception at the BufferedReader.reset() method

I have a hasNext() method for reading a file. It returns true if it's not the end of the file. In this method it has an Exception.

Exception Information:

My hasNext() method:

@Override
public boolean hasNext() {
    try {
        super.getSourceRead().mark(1);
        if (super.getSourceRead().read() < 0) {
            return false;
        }
        getSourceRead().reset();
        return true;
    } catch (IOException e) {
        Logger.exceptionOccurred(e);
        return false;
    } catch (NullPointerException e) {
        Logger.exceptionOccurred(e);
        return false;
    }
}

Upvotes: 2

Views: 2991

Answers (1)

Scis
Scis

Reputation: 2984

Well as it's written in the doc for 1.5:

After reading this many characters, attempting to reset the stream may fail.

So in your case it says it may fail after reading 1 character.

Setting the limit to 2 puts us in the safe zone.

And just to make a nagging style remark: I hope you have a constant or a member for that limit somewhere in your class (sorry I had to :) )

Upvotes: 2

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