1/* Licensed to the Apache Software Foundation (ASF) under one or more
2 * contributor license agreements.  See the NOTICE file distributed with
3 * this work for additional information regarding copyright ownership.
4 * The ASF licenses this file to You under the Apache License, Version 2.0
5 * (the "License"); you may not use this file except in compliance with
6 * the License.  You may obtain a copy of the License at
7 *
8 *     http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17package java.io;
18
19/**
20 * Defines an interface for classes that can (or need to) be flushed, typically
21 * before some output processing is considered to be finished and the object
22 * gets closed.
23 */
24public interface Flushable {
25    /**
26     * Flushes the object by writing out any buffered data to the underlying
27     * output.
28     *
29     * @throws IOException
30     *             if there are any issues writing the data.
31     */
32    void flush() throws IOException;
33}
34