2 * Licensed to the Apache Software Foundation (ASF) under one or more
3 * contributor license agreements. See the NOTICE file distributed with
4 * this work for additional information regarding copyright ownership.
5 * The ASF licenses this file to You under the Apache License, Version 2.0
6 * (the "License"); you may not use this file except in compliance with
7 * the License. You may obtain a copy of the License at
9 * http://www.apache.org/licenses/LICENSE-2.0
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
17 package javax.servlet;
19 import java.io.IOException;
22 * Receives notification of write events when using non-blocking IO.
26 public interface WriteListener extends java.util.EventListener{
29 * Invoked when it it possible to write data without blocking. The container
30 * will invoke this method the first time for a request as soon as data can
31 * be written. Subsequent invocations will only occur if a call to
32 * {@link ServletOutputStream#isReady()} has returned false and it has since
33 * become possible to write data.
37 public void onWritePossible() throws IOException;
40 * Invoked if an error occurs while writing the response.
44 public void onError(java.lang.Throwable throwable);