Method close

android/guava/src/com/google/common/io/Closer.java:195–218

Closes all {@code Closeable} instances that have been added to this {@code Closer}. If an exception was thrown in the try block and passed to one of the {@code exceptionThrown} methods, any exceptions thrown when attempting to close a closeable will be suppressed. Otherwise, the <i>first</i> excepti

()

   * additional exceptions that are thrown after that will be suppressed.
   */
  @Override
  public void close() throws IOException {
    Throwable throwable = thrown;

    // close closeables in LIFO order
    while (!stack.isEmpty()) {
      Closeable closeable = stack.removeFirst();
      try {
        closeable.close();
      } catch (Throwable e) {
        if (throwable == null) {
          throwable = e;
        } else {
          suppressor.suppress(closeable, throwable, e);
        }
      }
    }

    if (thrown == null && throwable != null) {
      throwIfInstanceOf(throwable, IOException.class);
      throwIfUnchecked(throwable);
      throw new AssertionError(throwable); // not possible
    }
  }

  /** Suppression strategy interface. */
  @VisibleForTesting