01: /*
02: * Copyright 2002-2004 The Apache Software Foundation
03: *
04: * Licensed under the Apache License, Version 2.0 (the "License");
05: * you may not use this file except in compliance with the License.
06: * You may obtain a copy of the License at
07: *
08: * http://www.apache.org/licenses/LICENSE-2.0
09: *
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: package org.apache.commons.collections;
17:
18: import java.util.NoSuchElementException;
19:
20: /**
21: * The BufferUnderflowException is used when the buffer is already empty.
22: * <p>
23: * NOTE: From version 3.0, this exception extends NoSuchElementException.
24: *
25: * @since Commons Collections 2.1
26: * @version $Revision: 155406 $ $Date: 2005-02-26 12:55:26 +0000 (Sat, 26 Feb 2005) $
27: *
28: * @author Avalon
29: * @author Berin Loritsch
30: * @author Jeff Turner
31: * @author Paul Jack
32: * @author Stephen Colebourne
33: */
34: public class BufferUnderflowException extends NoSuchElementException {
35:
36: /** The root cause throwable */
37: private final Throwable throwable;
38:
39: /**
40: * Constructs a new <code>BufferUnderflowException</code>.
41: */
42: public BufferUnderflowException() {
43: super ();
44: throwable = null;
45: }
46:
47: /**
48: * Construct a new <code>BufferUnderflowException</code>.
49: *
50: * @param message the detail message for this exception
51: */
52: public BufferUnderflowException(String message) {
53: this (message, null);
54: }
55:
56: /**
57: * Construct a new <code>BufferUnderflowException</code>.
58: *
59: * @param message the detail message for this exception
60: * @param exception the root cause of the exception
61: */
62: public BufferUnderflowException(String message, Throwable exception) {
63: super (message);
64: throwable = exception;
65: }
66:
67: /**
68: * Gets the root cause of the exception.
69: *
70: * @return the root cause
71: */
72: public final Throwable getCause() {
73: return throwable;
74: }
75:
76: }
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