Jia Tse
www.egr.unlv.edu/~jjtse


static String readLine() throws Exception{
/*
* this function reads a line from stdin and returns the string
* if EOF, return "EOF"
*/
StringBuffer s = new StringBuffer("");
int b = 0;
while (b != '\n' && b >= 0){
b = System.in.read();
if (b == -1 && s.length() == 0)	return ("EOF");
if (b != '\r' && b != '\n' && b >=0 )
s.append((char)b);
}
return s.toString();
}