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1   /*
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
8    *
9    *      http://www.apache.org/licenses/LICENSE-2.0
10   *
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. 
16   *
17   */
18  package org.apache.bcel.generic;
19  
20  /** 
21   * MONITORENTER - Enter monitor for object
22   * <PRE>Stack: ..., objectref -&gt; ...</PRE>
23   *
24   * @version $Id: MONITORENTER.html 898356 2014-02-18 05:44:40Z ggregory $
25   * @author  <A HREF="mailto:m.dahm@gmx.de">M. Dahm</A>
26   */
27  public class MONITORENTER extends Instruction implements ExceptionThrower, StackConsumer {
28  
29      private static final long serialVersionUID = 4537302966975402521L;
30  
31  
32      public MONITORENTER() {
33          super(org.apache.bcel.Constants.MONITORENTER, (short) 1);
34      }
35  
36  
37      public Class<?>[] getExceptions() {
38          return new Class[] {
39              org.apache.bcel.ExceptionConstants.NULL_POINTER_EXCEPTION
40          };
41      }
42  
43  
44      /**
45       * Call corresponding visitor method(s). The order is:
46       * Call visitor methods of implemented interfaces first, then
47       * call methods according to the class hierarchy in descending order,
48       * i.e., the most specific visitXXX() call comes last.
49       *
50       * @param v Visitor object
51       */
52      @Override
53      public void accept( Visitor v ) {
54          v.visitExceptionThrower(this);
55          v.visitStackConsumer(this);
56          v.visitMONITORENTER(this);
57      }
58  }