Java Programming

Here's my candidate for the fastest stream reader. My interest and testing is with file input streams, but it's nice to support any stream.

	public static String readStream(InputStream is) throws IOException{
		int i, length = 0;
		StringBuffer s = null;
		char[] c = null;
		InputStreamReader isr = new InputStreamReader(is);
		while(length != -1){
			length = is.available();
			if(c == null) c = new char[length];
			isr.read(c, 0 , length);
			i = isr.read();
			if(i == -1){
				if(s == null) return String.copyValueOf(c);
				else break;
			}else{
				if(s == null) s = new StringBuffer();
				s.append(c, 0, length);
				s.append((char)i);
			}
		}
		return s.toString();
	}