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 -> ...</PRE> 25 * 26 * @version $Id$ 27 */ 28 public class MONITORENTER extends Instruction implements ExceptionThrower, StackConsumer { 29 MONITORENTER()30 public MONITORENTER() { 31 super(org.apache.bcel.Const.MONITORENTER, (short) 1); 32 } 33 34 35 @Override getExceptions()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 accept( final Visitor v )52 public void accept( final Visitor v ) { 53 v.visitExceptionThrower(this); 54 v.visitStackConsumer(this); 55 v.visitMONITORENTER(this); 56 } 57 } 58