Java SeekableByteChannel read entire file

import java.nio.ByteBuffer;
import java.nio.channels.SeekableByteChannel;
import java.nio.charset.Charset;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.nio.file.StandardOpenOption;

public class Main {

   public static void main(String[] args) {
      Path path = Paths.get("Main.java");
      int bufferSize = 1024;
      try (SeekableByteChannel sbc = Files.newByteChannel(path, StandardOpenOption.READ)) {
         System.out.println("Contents of File");
         sbc.position(0);/*  ww w. j a  v a 2 s. c  om*/
         ByteBuffer buffer = ByteBuffer.allocate(bufferSize);
         String encoding = System.getProperty("file.encoding");
         int numberOfBytesRead = sbc.read(buffer);
         System.out.println("Number of bytes read: " + numberOfBytesRead);
         while (numberOfBytesRead > 0) {
            buffer.rewind();
            System.out.print("[" + Charset.forName(encoding).decode(buffer) + "]");
            buffer.flip();
            numberOfBytesRead = sbc.read(buffer);
            System.out.println("\nNumber of bytes read: " + numberOfBytesRead);
         }
      } catch (Exception e) {
         e.printStackTrace();
      }
   }
}