View Javadoc
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  import org.apache.bcel.ExceptionConst;
21  
22  /** 
23   * MONITORENTER - Enter monitor for object
24   * <PRE>Stack: ..., objectref -&gt; ...</PRE>
25   *
26   * @version $Id: MONITORENTER.html 990178 2016-06-08 08:17:52Z britter $
27   */
28  public class MONITORENTER extends Instruction implements ExceptionThrower, StackConsumer {
29  
30      public MONITORENTER() {
31          super(org.apache.bcel.Const.MONITORENTER, (short) 1);
32      }
33  
34  
35      @Override
36      public Class<?>[] getExceptions() {
37          return new Class[] {
38              ExceptionConst.NULL_POINTER_EXCEPTION
39          };
40      }
41  
42  
43      /**
44       * Call corresponding visitor method(s). The order is:
45       * Call visitor methods of implemented interfaces first, then
46       * call methods according to the class hierarchy in descending order,
47       * i.e., the most specific visitXXX() call comes last.
48       *
49       * @param v Visitor object
50       */
51      @Override
52      public void accept( final Visitor v ) {
53          v.visitExceptionThrower(this);
54          v.visitStackConsumer(this);
55          v.visitMONITORENTER(this);
56      }
57  }