import java.nio.file.*;

 import java.nio.channels.ReadableByteChannel;

 import java.io.IOException;

 import java.nio.ByteBuffer;

 public class ReadAString {

   public static void main(String[] args) {

     Path file = Paths.get(System.getProperty("user.home")).resolve("Beginning Java Struff").resolve("charData.txt");

     if(!Files.exists(file)) {

       System.out.println(file + " does not exist. Terminating program.");

       System.exit(1);;

     }

     ByteBuffer buf = ByteBuffer.allocate(50);

     try (ReadableByteChannel inCh = Files.newByteChannel(file)){

       while(inCh.read(buf) != -1) {

         System.out.print("String read: " +

                    ((ByteBuffer)(buf.flip())).asCharBuffer().toString());

         buf.clear();                                                   // Clear the buffer for the next read

       }

       System.out.println("EOF reached.");

     } catch(IOException e) {

       e.printStackTrace();

     }

   }

 }