Most Robust way of reading a file or stream using Java (to prevent DoS attacks)

Question

Currently I have the below code for reading an InputStream. I am storing the whole file into a StringBuilder variable and processing this string af

Answer 1

This worked for me without any problems.

    char charArray[] = new char[ MAX_BUFFER_SIZE ];
    int i = 0;
    int c = 0;
    while((c = br.read()) != -1 && i < MAX_BUFFER_SIZE) {
        char character = (char) c;
        charArray[i++] = character;
   }
   return Arrays.copyOfRange(charArray,0,i);