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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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