Method advance

android/guava/src/com/google/common/io/MultiReader.java:45–50

Closes the current reader and opens the next one, if any.

()

  /** Closes the current reader and opens the next one, if any. */
  private void advance() throws IOException {
    close();
    if (it.hasNext()) {
      current = it.next().openStream();
    }
  }

  @Override
  public int read(char[] cbuf, int off, int len) throws IOException {