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Forum posts for reader

Casting to a reader or creating a new reader

I am a little bit confused by the following thing:

public randomConstructor(Reader r) {
this.bufferedreader = new BufferedReader(r);
}

It seem to be logical that if you want to use a BufferedReader you should create one and use the reader as a parameter. However, I saw something like that:

public randomConstructor(Reader r) {
this.bufferedreader = (BufferedReader) r;
}

Obivously it doesn't work if r isn't a BufferedReader itself.

Sorry if I can't give you any better example, but I can remember that there was an example where it actually made sense to cast it to a reader. Is there any exception where it does make sense?

EDIT: bufferedreader is obviously a private variable of the type 'BufferedReader' :)

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Forum posts for reader

Casting to a reader or creating a new reader

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What is the carbon footprint of your coffee?