[2461] in java-interest
Re: Converting an int to a char?
daemon@ATHENA.MIT.EDU (Jonathan Payne)
Mon Oct 2 23:18:21 1995
Date: Mon, 2 Oct 1995 09:19:50 -0700
From: jpayne@starwave.com (Jonathan Payne)
To: pat@icon-stl.net
Cc: begenisi@oswego.Oswego.EDU, java-interest@java.sun.com
In-Reply-To: <Pine.SOL.3.91.951002011517.4939G-100000@flatland> (message from Pat Niemeyer on Mon, 2 Oct 1995 01:16:36 -0500 (CDT))
> Date: Mon, 2 Oct 1995 01:16:36 -0500 (CDT)
> From: Pat Niemeyer <pat@icon-stl.net>
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> On Sun, 1 Oct 1995, John M Begenisich wrote:
>
> > I'm trying to convert an int to a character. This is what I basically
> > have:
> >
> > String line = new String();
> > int dum=0;
> > while ((dum=(int)data.read())!=-1) {
> > b=(char)dum;
> > line+=(char)b;
> > ...blah blah blah...
> > }
> > System.out.print(line);
You can get what you want here by changing:
line += (char) b
to
line += new Character(b)
But neither of these is really all that appealing, since you get N
copies of the string, where N is the number of characters in the file
you're reading.
A better way to do this is:
StringBuffer buf = new StringBuffer(data.avilable());
int c;
while ((c = data.read()) != -1)
buf.appendChar(c);
Even this is not so great because the appendChar() routine is a little
bit expensive because it checks to see whether the StringBuffer has
been made into a String anywhere yet (by saying buf.toString()), in
which case it makes a copy of itself so that the String which has been
made (and is supposed to be read-only) is not modified by subsequent
appends or inserts.
But this is certainly faster than what you were doing.
--
Jonathan Payne jpayne@starwave.com
ESPNET SportsZone http://starwave.com/people/jpayne/
Starwave Corporation
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