001/* 002 * Licensed to the Apache Software Foundation (ASF) under one 003 * or more contributor license agreements. See the NOTICE file 004 * distributed with this work for additional information 005 * regarding copyright ownership. The ASF licenses this file 006 * to you under the Apache License, Version 2.0 (the 007 * "License"); you may not use this file except in compliance 008 * with the License. You may obtain a copy of the License at 009 * 010 * https://www.apache.org/licenses/LICENSE-2.0 011 * 012 * Unless required by applicable law or agreed to in writing, 013 * software distributed under the License is distributed on an 014 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 015 * KIND, either express or implied. See the License for the 016 * specific language governing permissions and limitations 017 * under the License. 018 */ 019package org.apache.bcel.generic; 020 021import org.apache.bcel.ExceptionConst; 022 023/** 024 * MONITORENTER - Enter monitor for object 025 * 026 * <PRE> 027 * Stack: ..., objectref -> ... 028 * </PRE> 029 */ 030public class MONITORENTER extends Instruction implements ExceptionThrower, StackConsumer { 031 032 public MONITORENTER() { 033 super(org.apache.bcel.Const.MONITORENTER, (short) 1); 034 } 035 036 /** 037 * Call corresponding visitor method(s). The order is: Call visitor methods of implemented interfaces first, then call 038 * methods according to the class hierarchy in descending order, i.e., the most specific visitXXX() call comes last. 039 * 040 * @param v Visitor object 041 */ 042 @Override 043 public void accept(final Visitor v) { 044 v.visitExceptionThrower(this); 045 v.visitStackConsumer(this); 046 v.visitMONITORENTER(this); 047 } 048 049 @Override 050 public Class<?>[] getExceptions() { 051 return new Class[] {ExceptionConst.NULL_POINTER_EXCEPTION}; 052 } 053}