1 /* 2 * Copyright (c) 2003, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 */ 23 24 /* 25 * build @BUILD_TAG_PLACEHOLDER@ 26 * 27 * @COPYRIGHT_MINI_LEGAL_NOTICE_PLACEHOLDER@ 28 */ 29 30 /** 31 * Simple definition of a standard MBean, named "SimpleStandard". 32 * 33 * The "SimpleStandard" standard MBean shows how to expose attributes 34 * and operations for management by implementing its corresponding 35 * "SimpleStandardMBean" management interface. 36 * 37 * This MBean has two attributes and one operation exposed 38 * for management by a JMX agent: 39 * - the read/write "State" attribute, 40 * - the read only "NbChanges" attribute, 41 * - the "reset()" operation. 42 * 43 * This object also has one property and one method not exposed 44 * for management by a JMX agent: 45 * - the "NbResets" property, 46 * - the "getNbResets()" method. 47 */ 48 49 import javax.management.AttributeChangeNotification; 50 import javax.management.NotificationBroadcasterSupport; 51 52 public class SimpleStandard 53 extends NotificationBroadcasterSupport 54 implements SimpleStandardMBean { 55 56 /* 57 * ----------------------------------------------------- 58 * CONSTRUCTORS 59 * ----------------------------------------------------- 60 */ 61 62 /* "SimpleStandard" does not provide any specific constructors. 63 * However, "SimpleStandard" is JMX compliant with regards to 64 * contructors because the default contructor SimpleStandard() 65 * provided by the Java compiler is public. 66 */ 67 68 /* 69 * ----------------------------------------------------- 70 * IMPLEMENTATION OF THE SimpleStandardMBean INTERFACE 71 * ----------------------------------------------------- 72 */ 73 74 /** 75 * Getter: get the "State" attribute of the "SimpleStandard" standard MBean. 76 * 77 * @return the current value of the "State" attribute. 78 */ getState()79 public String getState() { 80 return state; 81 } 82 83 /** 84 * Setter: set the "State" attribute of the "SimpleStandard" standard MBean. 85 * 86 * @param <VAR>s</VAR> the new value of the "State" attribute. 87 */ setState(String s)88 public void setState(String s) { 89 state = s; 90 nbChanges++; 91 } 92 93 /** 94 * Getter: get the "NbChanges" attribute of the "SimpleStandard" standard 95 * MBean. 96 * 97 * @return the current value of the "NbChanges" attribute. 98 */ getNbChanges()99 public int getNbChanges() { 100 return nbChanges; 101 } 102 103 /** 104 * Operation: reset to their initial values the "State" and "NbChanges" 105 * attributes of the "SimpleStandard" standard MBean. 106 */ reset()107 public void reset() { 108 AttributeChangeNotification acn = 109 new AttributeChangeNotification(this, 110 0, 111 0, 112 "NbChanges reset", 113 "NbChanges", 114 "Integer", 115 new Integer(nbChanges), 116 new Integer(0)); 117 state = "initial state"; 118 nbChanges = 0; 119 nbResets++; 120 sendNotification(acn); 121 } 122 123 /* 124 * ----------------------------------------------------- 125 * METHOD NOT EXPOSED FOR MANAGEMENT BY A JMX AGENT 126 * ----------------------------------------------------- 127 */ 128 129 /** 130 * Return the "NbResets" property. 131 * This method is not a Getter in the JMX sense because it 132 * is not exposed in the "SimpleStandardMBean" interface. 133 * 134 * @return the current value of the "NbResets" property. 135 */ getNbResets()136 public int getNbResets() { 137 return nbResets; 138 } 139 140 /* 141 * ----------------------------------------------------- 142 * ATTRIBUTES ACCESSIBLE FOR MANAGEMENT BY A JMX AGENT 143 * ----------------------------------------------------- 144 */ 145 146 private String state = "initial state"; 147 private int nbChanges = 0; 148 149 /* 150 * ----------------------------------------------------- 151 * PROPERTY NOT ACCESSIBLE FOR MANAGEMENT BY A JMX AGENT 152 * ----------------------------------------------------- 153 */ 154 155 private int nbResets = 0; 156 } 157