Java ByteBuffer convert remaining byte buffer to String by UTF-8

import java.nio.ByteBuffer;
import java.nio.charset.Charset;

public class Main {
  public static void main(String[] argv) throws Exception {
    ByteBuffer buf = ByteBuffer.wrap("demo2s.com".getBytes());
    String a = toTextRemaining(buf);
    System.out.println(a);/*from w  w  w . j  a va2s.  c  o m*/

  }

  private static final Charset UTF8 = Charset.forName("UTF-8");

  /**
   * Convert remaining byte buffer to UTF-8 String.
   *
   * @param bytes
   *          Source byte buffer.
   * @return String expression of the bytes.
   */
  public static String toTextRemaining(ByteBuffer bytes) {
    return new String(toBytesRemaining(bytes), UTF8);
  }

  /**
   * Convert remaining byte buffer to byte array.
   *
   * @param buffer
   *          Source byte buffer
   * @return Remaining byte array.
   */
  public static byte[] toBytesRemaining(ByteBuffer buffer) {
    byte[] array = new byte[buffer.remaining()];
    buffer.get(array);
    return array;
  }
}