Getting the character returned by read() in BufferedReader

Question

How can I convert an integer returned by the read() in a BufferedReader to the actual character value and then append it to a String? The rea

Answer 1

Just cast c to a char.

Also, don't ever use += on a String in a loop. It is O(n^2), rather than the expected O(n). Use StringBuilder or StringBuffer instead.

int c;
StringBuilder response= new StringBuilder();

while ((c = bufferedReader.read()) != -1) {
    // Since c is an integer, cast it to a char.
    // If c isn't -1, it will be in the correct range of char.
    response.append( (char)c ) ;  
}
String result = response.toString();

Answer 2

Cast it to a char first:

response += (char) c;

Also (unrelated to your question), in that particular example you should use a StringBuilder, not a String.

Answer 3

you could also read it into a char buffer

char[] buff = new char[1024];
int read;
StringBuilder response= new StringBuilder();
while((read = bufferedReader.read(buff)) != -1) {

    response.append( buff,0,read ) ;  
}

this will be more efficient than reading char per char