Java, need a while loop to reach eof. i.e.while !eof, keep parsing

Question

I currently have a working parser. It parses a file once(not what I want it to do) and then outputs parsed data into a file. I need it to keep parsing and appending to the s

Answer 1

DataInputStream has a lot of readXXX() methods that do throw EOFException but the method that you're using DataInputStream.read() does not throw EOFException.

To correctly identify the EOF while using read() implement your while loop as follows

int read = 0;
byte[] b = new byte[1024];
while ((read = dis.read(b)) != -1) { // returns numOfBytesRead or -1 at EOF
  // parse, or write to output stream as
  dos.write(b, 0, read); // (byte[], offset, numOfBytesToWrite)
}