1 /*
2 * ====================================================================
3 * Licensed to the Apache Software Foundation (ASF) under one
4 * or more contributor license agreements. See the NOTICE file
5 * distributed with this work for additional information
6 * regarding copyright ownership. The ASF licenses this file
7 * to you under the Apache License, Version 2.0 (the
8 * "License"); you may not use this file except in compliance
9 * with the License. You may obtain a copy of the License at
10 *
11 * http://www.apache.org/licenses/LICENSE-2.0
12 *
13 * Unless required by applicable law or agreed to in writing,
14 * software distributed under the License is distributed on an
15 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
16 * KIND, either express or implied. See the License for the
17 * specific language governing permissions and limitations
18 * under the License.
19 * ====================================================================
20 *
21 * This software consists of voluntary contributions made by many
22 * individuals on behalf of the Apache Software Foundation. For more
23 * information on the Apache Software Foundation, please see
24 * <http://www.apache.org/>.
25 *
26 */
27
28 package org.apache.http.impl.io;
29
30 import java.io.InputStream;
31
32 /**
33 * @since 4.4
34 */
35 public final class EmptyInputStream extends InputStream {
36
37 public static final EmptyInputStreameam.html#EmptyInputStream">EmptyInputStream INSTANCE = new EmptyInputStream();
38
39 private EmptyInputStream() {
40 }
41
42 @Override
43 public int available() {
44 return 0;
45 }
46
47 @Override
48 public void close() {
49 }
50
51 @Override
52 public void mark(final int readLimit) {
53 }
54
55 @Override
56 public boolean markSupported() {
57 return true;
58 }
59
60 @Override
61 public int read() {
62 return -1;
63 }
64
65 @Override
66 public int read(final byte[] buf) {
67 return -1;
68 }
69
70 @Override
71 public int read(final byte[] buf, final int off, final int len) {
72 return -1;
73 }
74
75 @Override
76 public void reset() {
77 }
78
79 @Override
80 public long skip(final long n) {
81 return 0L;
82 }
83 }
84