private CloseOp closefile; // handle to call cleanup method when finished reading
public FileReader(TextFile f, CloseOp c)
{
this.f = f; count = 0; closefile = c;
}
// factory method to manufacture a helper reader object,
// where c is the method to call when reading is finished
public FileReader makeReader(CloseOp c)
{
return(new FileReader(this, c));
}
// factory method to manufacture a helper writer object,
// where c is the method to call when writing is finished
public FileWriter makeWriter(CloseOp c)
{
return(new FileWriter(this, c));
}
private CloseOp closefile; // cleanup method that is called when writing done
public FileWriter(TextFile f, CloseOp c)
{
closefile = c;
this.f = f;
this.f.reset();
}