memorymanagermxbean.html

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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 1.5.0_03) on Wed Nov 02 09:50:14 CST 2005 --><META http-equiv="Content-Type" content="text/html; charset=gb2312"><TITLE>MemoryManagerMXBean (Java 2 Platform SE 5.0)</TITLE><META NAME="keywords" CONTENT="java.lang.management.MemoryManagerMXBean interface"><LINK REL ="stylesheet" TYPE="text/css" HREF="../../../stylesheet.css" TITLE="Style"><SCRIPT type="text/javascript">function windowTitle(){    parent.document.title="MemoryManagerMXBean (Java 2 Platform SE 5.0)";}</SCRIPT><NOSCRIPT></NOSCRIPT></HEAD><BODY BGCOLOR="white" onload="windowTitle();"><!-- ========= START OF TOP NAVBAR ======= --><A NAME="navbar_top"><!-- --></A><A HREF="#skip-navbar_top" title="跳过导航链接"></A><TABLE BORDER="0" WIDTH="100%" CELLPADDING="1" CELLSPACING="0" SUMMARY=""><TR><TD COLSPAN=2 BGCOLOR="#EEEEFF" CLASS="NavBarCell1"><A NAME="navbar_top_firstrow"><!-- --></A><TABLE BORDER="0" CELLPADDING="0" CELLSPACING="3" SUMMARY="">  <TR ALIGN="center" VALIGN="top">  <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1">    <A HREF="../../../overview-summary.html"><FONT CLASS="NavBarFont1"><B>概述</B></FONT></A>&nbsp;</TD>  <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1">    <A HREF="package-summary.html"><FONT CLASS="NavBarFont1"><B>软件包</B></FONT></A>&nbsp;</TD>  <TD BGCOLOR="#FFFFFF" CLASS="NavBarCell1Rev"> &nbsp;<FONT CLASS="NavBarFont1Rev"><B>类</B></FONT>&nbsp;</TD>  <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1">    <A HREF="class-use/MemoryManagerMXBean.html"><FONT CLASS="NavBarFont1"><B>使用</B></FONT></A>&nbsp;</TD>  <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1">    <A HREF="package-tree.html"><FONT CLASS="NavBarFont1"><B>树</B></FONT></A>&nbsp;</TD>  <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1">    <A HREF="../../../deprecated-list.html"><FONT CLASS="NavBarFont1"><B>已过时</B></FONT></A>&nbsp;</TD>  <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1">    <A HREF="../../../index-files/index-1.html"><FONT CLASS="NavBarFont1"><B>索引</B></FONT></A>&nbsp;</TD>  <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1">    <A HREF="../../../help-doc.html"><FONT CLASS="NavBarFont1"><B>帮助</B></FONT></A>&nbsp;</TD>  </TR></TABLE></TD><TD ALIGN="right" VALIGN="top" ROWSPAN=3><EM><b>Java<sup><font size=-2>TM</font></sup>&nbsp;2&nbsp;Platform<br>Standard&nbsp;Ed. 5.0</b></EM></TD></TR><TR><TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2">&nbsp;<A HREF="ManagementPermission.html" title="java.lang.management 中的类"><B>上一个类</B></A>&nbsp;&nbsp;<A HREF="MemoryMXBean.html" title="java.lang.management 中的接口"><B>下一个类</B></A></FONT></TD><TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2">  <A HREF="../../../index.html@java_2Flang_2Fmanagement_2FMemoryManagerMXBean.html" target="_top"><B>框架</B></A>  &nbsp;&nbsp;<A HREF="MemoryManagerMXBean.html" target="_top"><B>无框架</B></A>  &nbsp;&nbsp;<SCRIPT type="text/javascript">  <!--  if(window==top) {    document.writeln('<A HREF="../../../allclasses-noframe.html"><B>所有类</B></A>');  }  //--></SCRIPT><NOSCRIPT>  <A HREF="../../../allclasses-noframe.html"><B>所有类</B></A></NOSCRIPT></FONT></TD></TR><TR><TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2">  摘要:&nbsp;嵌套&nbsp;|&nbsp;字段&nbsp;|&nbsp;构造方法&nbsp;|&nbsp;<A HREF="#method_summary">方法</A></FONT></TD><TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2">详细信息:&nbsp;字段&nbsp;|&nbsp;构造方法&nbsp;|&nbsp;<A HREF="#method_detail">方法</A></FONT></TD></TR></TABLE><A NAME="skip-navbar_top"></A><!-- ========= END OF TOP NAVBAR ========= --><HR><!-- ======== START OF CLASS DATA ======== --><H2><FONT SIZE="-1">java.lang.management</FONT><BR>接口 MemoryManagerMXBean</H2><DL><DT><B>所有已知子接口:</B> <DD><A HREF="GarbageCollectorMXBean.html" title="java.lang.management 中的接口">GarbageCollectorMXBean</A></DD></DL><HR><DL><DT><PRE>public interface <B>MemoryManagerMXBean</B></DL></PRE><P>内存管理器的管理接口。内存管理器管理 Java 虚拟机的一个或多个内存池。<p> Java 虚拟机具有一个或多个内存管理器。实现此接口的实例是 <a href="ManagementFactory.html#MXBean">MXBean</a>,可以通过调用 <A HREF="ManagementFactory.html#getMemoryManagerMXBeans()"><CODE>ManagementFactory.getMemoryManagerMXBeans()</CODE></A> 方法或从<A HREF="ManagementFactory.html#getPlatformMBeanServer()"><CODE>平台 <tt>MBeanServer</tt></CODE></A> 方法获得。<p>在 MBeanServer 内惟一标识内存管理器的 MXBean 的 <tt>ObjectName</tt> 为: <blockquote>   <A HREF="ManagementFactory.html#MEMORY_MANAGER_MXBEAN_DOMAIN_TYPE"><CODE><tt>java.lang:type=MemoryManager</tt></CODE></A><tt>,name=</tt><i>manager's name</i> </blockquote><P><P><DL><DT><B>从以下版本开始:</B></DT>  <DD>1.5</DD><DT><B>另请参见:</B><DD><A HREF="MemoryMXBean.html" title="java.lang.management 中的接口"><CODE>MemoryMXBean</CODE></A>, <a href="../../../javax/management/package-summary.html">JMX Specification.</a>, <a href="package-summary.html#examples">访问 MXBeans 的方式</a></DL><HR><P><!-- ========== METHOD SUMMARY =========== --><A NAME="method_summary"><!-- --></A><TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""><TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"><TH ALIGN="left" COLSPAN="2"><FONT SIZE="+2"><B>方法摘要</B></FONT></TH></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>&nbsp;<A HREF="../String.html" title="java.lang 中的类">String</A>[]</CODE></FONT></TD><TD><CODE><B><A HREF="MemoryManagerMXBean.html#getMemoryPoolNames()">getMemoryPoolNames</A></B>()</CODE><BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;返回此内存管理器管理的内存池名称。</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>&nbsp;<A HREF="../String.html" title="java.lang 中的类">String</A></CODE></FONT></TD><TD><CODE><B><A HREF="MemoryManagerMXBean.html#getName()">getName</A></B>()</CODE><BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;返回表示此内存管理器的名称。</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>&nbsp;boolean</CODE></FONT></TD><TD><CODE><B><A HREF="MemoryManagerMXBean.html#isValid()">isValid</A></B>()</CODE><BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;测试此内存管理器在 Java 虚拟机中是否有效。</TD></TR></TABLE>&nbsp;<P><!-- ============ METHOD DETAIL ========== --><A NAME="method_detail"><!-- --></A><TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""><TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"><TH ALIGN="left" COLSPAN="1"><FONT SIZE="+2"><B>方法详细信息</B></FONT></TH></TR></TABLE><A NAME="getName()"><!-- --></A><H3>getName</H3><PRE><A HREF="../String.html" title="java.lang 中的类">String</A> <B>getName</B>()</PRE><DL><DD>返回表示此内存管理器的名称。<P><DD><DL><DT><B>返回:</B><DD>此内存管理器的名称。</DL></DD></DL><HR><A NAME="isValid()"><!-- --></A><H3>isValid</H3><PRE>boolean <B>isValid</B>()</PRE><DL><DD>测试此内存管理器在 Java 虚拟机中是否有效。一旦 Java 虚拟机将内存管理器从内存系统删除,该内存管理器就变为无效。<P><DD><DL><DT><B>返回:</B><DD>如果内存管理器在 Java 虚拟机中有效,则返回 <tt>true</tt>;否则返回 <tt>false</tt>。</DL></DD></DL><HR><A NAME="getMemoryPoolNames()"><!-- --></A><H3>getMemoryPoolNames</H3><PRE><A HREF="../String.html" title="java.lang 中的类">String</A>[] <B>getMemoryPoolNames</B>()</PRE><DL><DD>返回此内存管理器管理的内存池名称。<P><DD><DL><DT><B>返回:</B><DD><tt>String</tt> 对象的数组,其中的每个对象都是此内存管理器管理的内存池的名称。</DL></DD></DL><!-- ========= END OF CLASS DATA ========= --><HR><!-- ======= START OF BOTTOM NAVBAR ====== --><A NAME="navbar_bottom"><!-- --></A><A HREF="#skip-navbar_bottom" title="跳过导航链接"></A><TABLE BORDER="0" WIDTH="100%" CELLPADDING="1" CELLSPACING="0" SUMMARY=""><TR><TD COLSPAN=2 BGCOLOR="#EEEEFF" CLASS="NavBarCell1"><A NAME="navbar_bottom_firstrow"><!-- --></A><TABLE BORDER="0" CELLPADDING="0" CELLSPACING="3" SUMMARY="">  <TR ALIGN="center" VALIGN="top">  <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1">    <A HREF="../../../overview-summary.html"><FONT CLASS="NavBarFont1"><B>概述</B></FONT></A>&nbsp;</TD>  <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1">    <A HREF="package-summary.html"><FONT CLASS="NavBarFont1"><B>软件包</B></FONT></A>&nbsp;</TD>  <TD BGCOLOR="#FFFFFF" CLASS="NavBarCell1Rev"> &nbsp;<FONT CLASS="NavBarFont1Rev"><B>类</B></FONT>&nbsp;</TD>  <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1">    <A HREF="class-use/MemoryManagerMXBean.html"><FONT CLASS="NavBarFont1"><B>使用</B></FONT></A>&nbsp;</TD>  <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1">    <A HREF="package-tree.html"><FONT CLASS="NavBarFont1"><B>树</B></FONT></A>&nbsp;</TD>  <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1">    <A HREF="../../../deprecated-list.html"><FONT CLASS="NavBarFont1"><B>已过时</B></FONT></A>&nbsp;</TD>  <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1">    <A HREF="../../../index-files/index-1.html"><FONT CLASS="NavBarFont1"><B>索引</B></FONT></A>&nbsp;</TD>  <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1">    <A HREF="../../../help-doc.html"><FONT CLASS="NavBarFont1"><B>帮助</B></FONT></A>&nbsp;</TD>  </TR></TABLE></TD><TD ALIGN="right" VALIGN="top" ROWSPAN=3><EM><b>Java<sup><font size=-2>TM</font></sup>&nbsp;2&nbsp;Platform<br>Standard&nbsp;Ed. 5.0</b></EM></TD></TR><TR><TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2">&nbsp;<A HREF="ManagementPermission.html" title="java.lang.management 中的类"><B>上一个类</B></A>&nbsp;&nbsp;<A HREF="MemoryMXBean.html" title="java.lang.management 中的接口"><B>下一个类</B></A></FONT></TD><TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2">  <A HREF="../../../index.html@java_2Flang_2Fmanagement_2FMemoryManagerMXBean.html" target="_top"><B>框架</B></A>  &nbsp;&nbsp;<A HREF="MemoryManagerMXBean.html" target="_top"><B>无框架</B></A>  &nbsp;&nbsp;<SCRIPT type="text/javascript">  <!--  if(window==top) {    document.writeln('<A HREF="../../../allclasses-noframe.html"><B>所有类</B></A>');  }  //--></SCRIPT><NOSCRIPT>  <A HREF="../../../allclasses-noframe.html"><B>所有类</B></A></NOSCRIPT></FONT></TD></TR><TR><TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2">  摘要:&nbsp;嵌套&nbsp;|&nbsp;字段&nbsp;|&nbsp;构造方法&nbsp;|&nbsp;<A 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