* @since 1.0
 */
@J2ktIncompatible
@GwtIncompatible
public final class CharStreams {

  // 2K chars (4K bytes)
  private static final int DEFAULT_BUF_SIZE = 0x800;

  /** Creates a new {@code CharBuffer} for buffering reads or writes. */
  static CharBuffer createBuffer() {
    return CharBuffer.allocate(DEFAULT_BUF_SIZE);
  }

  private CharStreams() {}

  /**

  public long copyTo(Appendable appendable) throws IOException {
    checkNotNull(appendable);

    Closer closer = Closer.create();
    try {
      Reader reader = closer.register(openStream());
      return CharStreams.copy(reader, appendable);
    } catch (Throwable e) {
      throw closer.rethrow(e);
    } finally {
      closer.close();
    }
  }

  /**
   * Copies the contents of this source to the given sink.

  public long copyTo(Appendable appendable) throws IOException {
    checkNotNull(appendable);

    Closer closer = Closer.create();
    try {
      Reader reader = closer.register(openStream());
      return CharStreams.copy(reader, appendable);
    } catch (Throwable e) {
      throw closer.rethrow(e);
    } finally {
      closer.close();
    }
  }

  /**
   * Copies the contents of this source to the given sink.