Adding characters to a string

Question

hi guys,
i have to do this:
i take the string and read it character by character and everytime i read a new character, i put it into my output string until i reach the \n character, there i simply return my output string.
THE problem: i need to be able to read it characters from my input string.
I can't use a stringbuffer because that brings up other complications later inmy program.
I basically need to know can i read something character by character and put it into a string
thanx!
public String Split(String input, int i)
char carriagereturn= '\n';
String output="";
try
while(i<input.length())
if(input.charAt(i)== carriagereturn )
return output;
if(input.charAt(i)!= carriagereturn)
output.concat(input.charAt(i));
i++;
} catch (Exception e)
return output;
}//end of method Split

Answer 1

import java.io.*;
public String split(String s) {
ByteArrayInputStream bstream = new ByteArrayInputStream(s.getBytes());
StringBuffer buf = new StringBuffer();
int c;
int CR = 13;
int LF = 10;
while ((c = bstream.read()) != -1) {
if (c == CR || c == LF)
break;
buf.append((char)c);
return buf.toString();