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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"><!--NewPage--><HTML><HEAD><!-- Generated by javadoc (build 1.4.2_02) on Thu Nov 13 17:20:55 PST 2003 --><TITLE>RequiredModelMBean (Java 2 Platform Ent. Ed. v1.4)</TITLE><META NAME="keywords" CONTENT="javax.management.modelmbean.RequiredModelMBean class"><LINK REL ="stylesheet" TYPE="text/css" HREF="../../../stylesheet.css" TITLE="Style"><SCRIPT type="text/javascript">function windowTitle(){ parent.document.title="RequiredModelMBean (Java 2 Platform Ent. 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Ed. v1.4</b></EM></TD></TR><TR><TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2"> <A HREF="../../../javax/management/modelmbean/ModelMBeanOperationInfo.html" title="class in javax.management.modelmbean"><B>PREV CLASS</B></A> NEXT CLASS</FONT></TD><TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2"> <A HREF="../../../index.html" target="_top"><B>FRAMES</B></A> <A HREF="RequiredModelMBean.html" target="_top"><B>NO FRAMES</B></A> <SCRIPT type="text/javascript"> <!-- if(window==top) { document.writeln('<A HREF="../../../allclasses-noframe.html"><B>All Classes</B></A>'); } //--></SCRIPT><NOSCRIPT> <A HREF="../../../allclasses-noframe.html"><B>All Classes</B></A></NOSCRIPT></FONT></TD></TR><TR><TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2"> SUMMARY: NESTED | FIELD | <A HREF="#constructor_summary">CONSTR</A> | <A HREF="#method_summary">METHOD</A></FONT></TD><TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2">DETAIL: FIELD | <A HREF="#constructor_detail">CONSTR</A> | <A HREF="#method_detail">METHOD</A></FONT></TD></TR></TABLE><A NAME="skip-navbar_top"></A><!-- ========= END OF TOP NAVBAR ========= --><HR><!-- ======== START OF CLASS DATA ======== --><H2><FONT SIZE="-1">javax.management.modelmbean</FONT><BR>Class RequiredModelMBean</H2><PRE><A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/Object.html" title="class or interface in java.lang">java.lang.Object</A> <IMG SRC="../../../resources/inherit.gif" ALT="extended by"><B>javax.management.modelmbean.RequiredModelMBean</B></PRE><DL><DT><B>All Implemented Interfaces:</B> <DD><A HREF="../../../javax/management/DynamicMBean.html" title="interface in javax.management">DynamicMBean</A>, <A HREF="../../../javax/management/MBeanRegistration.html" title="interface in javax.management">MBeanRegistration</A>, <A HREF="../../../javax/management/modelmbean/ModelMBean.html" title="interface in javax.management.modelmbean">ModelMBean</A>, <A HREF="../../../javax/management/modelmbean/ModelMBeanNotificationBroadcaster.html" title="interface in javax.management.modelmbean">ModelMBeanNotificationBroadcaster</A>, <A HREF="../../../javax/management/NotificationBroadcaster.html" title="interface in javax.management">NotificationBroadcaster</A>, <A HREF="../../../javax/management/NotificationEmitter.html" title="interface in javax.management">NotificationEmitter</A>, <A HREF="../../../javax/management/PersistentMBean.html" title="interface in javax.management">PersistentMBean</A></DD></DL><HR><DL><DT>public class <B>RequiredModelMBean</B><DT>extends <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/Object.html" title="class or interface in java.lang">Object</A><DT>implements <A HREF="../../../javax/management/modelmbean/ModelMBean.html" title="interface in javax.management.modelmbean">ModelMBean</A>, <A HREF="../../../javax/management/MBeanRegistration.html" title="interface in javax.management">MBeanRegistration</A>, <A HREF="../../../javax/management/NotificationEmitter.html" title="interface in javax.management">NotificationEmitter</A></DL><P>This class is the implementation of a ModelMBean. An appropriate implementation of a ModelMBean must be shipped with every JMX Agent and the class must be named RequiredModelMBean. <P> Java resources wishing to be manageable instantiate the RequiredModelMBean using the MBeanServer's createMBean method. The resource then sets the MBeanInfo and Descriptors for the RequiredModelMBean instance. The attributes and operations exposed via the ModelMBeanInfo for the ModelMBean are accessible from MBeans, connectors/adaptors like other MBeans. Through the Descriptors, values and methods in the managed application can be defined and mapped to attributes and operations of the ModelMBean. This mapping can be defined in an XML formatted file or dynamically and programmatically at runtime. <P> Every RequiredModelMBean which is instantiated in the MBeanServer becomes manageable:<br> its attributes and operations become remotely accessible through the connectors/adaptors connected to that MBeanServer. <P> A Java object cannot be registered in the MBeanServer unless it is a JMX compliant MBean. By instantiating a RequiredModelMBean, resources are guaranteed that the MBean is valid. MBeanException and RuntimeOperationsException must be thrown on every public method. This allows for wrappering exceptions from distributed communications (RMI, EJB, etc.)<P><P><HR><P><!-- ======== NESTED CLASS SUMMARY ======== --><!-- =========== FIELD SUMMARY =========== --><!-- ======== CONSTRUCTOR SUMMARY ======== --><A NAME="constructor_summary"><!-- --></A><TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""><TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"><TD COLSPAN=2><FONT SIZE="+2"><B>Constructor Summary</B></FONT></TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD><CODE><B><A HREF="../../../javax/management/modelmbean/RequiredModelMBean.html#RequiredModelMBean()">RequiredModelMBean</A></B>()</CODE><BR> Constructs an <CODE>RequiredModelMBean</CODE> with an empty ModelMBeanInfo. </TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD><CODE><B><A HREF="../../../javax/management/modelmbean/RequiredModelMBean.html#RequiredModelMBean(javax.management.modelmbean.ModelMBeanInfo)">RequiredModelMBean</A></B>(<A HREF="../../../javax/management/modelmbean/ModelMBeanInfo.html" title="interface in javax.management.modelmbean">ModelMBeanInfo</A> mbi)</CODE><BR> Constructs a RequiredModelMBean object using ModelMBeanInfo passed in. </TD></TR></TABLE> <!-- ========== METHOD SUMMARY =========== --><A NAME="method_summary"><!-- --></A><TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""><TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"><TD COLSPAN=2><FONT SIZE="+2"><B>Method Summary</B></FONT></TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> void</CODE></FONT></TD><TD><CODE><B><A HREF="../../../javax/management/modelmbean/RequiredModelMBean.html#addAttributeChangeNotificationListener(javax.management.NotificationListener, java.lang.String, java.lang.Object)">addAttributeChangeNotificationListener</A></B>(<A HREF="../../../javax/management/NotificationListener.html" title="interface in javax.management">NotificationListener</A> inlistener, <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/String.html" title="class or interface in java.lang">String</A> inAttributeName, <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/Object.html" title="class or interface in java.lang">Object</A> inhandback)</CODE><BR> Registers an object which implements the NotificationListener interface as a listener. </TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> void</CODE></FONT></TD><TD><CODE><B><A HREF="../../../javax/management/modelmbean/RequiredModelMBean.html#addNotificationListener(javax.management.NotificationListener, javax.management.NotificationFilter, java.lang.Object)">addNotificationListener</A></B>(<A HREF="../../../javax/management/NotificationListener.html" title="interface in javax.management">NotificationListener</A> listener, <A HREF="../../../javax/management/NotificationFilter.html" title="interface in javax.management">NotificationFilter</A> filter, <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/Object.html" title="class or interface in java.lang">Object</A> handback)</CODE><BR> Registers an object which implements the NotificationListener interface as a listener. </TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/Object.html" title="class or interface in java.lang">Object</A></CODE></FONT></TD><TD><CODE><B><A HREF="../../../javax/management/modelmbean/RequiredModelMBean.html#getAttribute(java.lang.String)">getAttribute</A></B>(<A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/String.html" title="class or interface in java.lang">String</A> attrName)</CODE><BR>⌨️ 快捷键说明
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