memoryusage.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 09:52:58 CST 2005 --><META http-equiv="Content-Type" content="text/html; charset=gb2312"><TITLE>类 java.lang.management.MemoryUsage 的使用 (Java 2 Platform SE 5.0)</TITLE><LINK REL ="stylesheet" TYPE="text/css" HREF="../../../../stylesheet.css" TITLE="Style"><SCRIPT type="text/javascript">function windowTitle(){ parent.document.title="类 java.lang.management.MemoryUsage 的使用 (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> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../package-summary.html"><FONT CLASS="NavBarFont1"><B>软件包</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../MemoryUsage.html" title="java.lang.management 中的类"><FONT CLASS="NavBarFont1"><B>类</B></FONT></A> </TD> <TD BGCOLOR="#FFFFFF" CLASS="NavBarCell1Rev"> <FONT CLASS="NavBarFont1Rev"><B>使用</B></FONT> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../package-tree.html"><FONT CLASS="NavBarFont1"><B>树</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../../../deprecated-list.html"><FONT CLASS="NavBarFont1"><B>已过时</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../../../index-files/index-1.html"><FONT CLASS="NavBarFont1"><B>索引</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../../../help-doc.html"><FONT CLASS="NavBarFont1"><B>帮助</B></FONT></A> </TD> </TR></TABLE></TD><TD ALIGN="right" VALIGN="top" ROWSPAN=3><EM><b>Java<sup><font size=-2>TM</font></sup> 2 Platform<br>Standard Ed. 5.0</b></EM></TD></TR><TR><TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2"> 上一个 下一个</FONT></TD><TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2"> <A HREF="../../../../index.html@java_2Flang_2Fmanagement_2F_2Fclass-useMemoryUsage.html" target="_top"><B>框架</B></A> <A HREF="MemoryUsage.html" target="_top"><B>无框架</B></A> <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></TABLE><A NAME="skip-navbar_top"></A><!-- ========= END OF TOP NAVBAR ========= --><HR><CENTER><H2><B>类 java.lang.management.MemoryUsage<br>的使用</B></H2></CENTER><TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""><TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"><TH ALIGN="left" COLSPAN="2"><FONT SIZE="+2">使用 <A HREF="../MemoryUsage.html" title="java.lang.management 中的类">MemoryUsage</A> 的软件包</FONT></TH></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD><A HREF="#java.lang.management"><B>java.lang.management</B></A></TD><TD>提供管理接口，用于监视和管理 Java 虚拟机以及 Java 虚拟机在其上运行的操作系统。 </TD></TR></TABLE> <P><A NAME="java.lang.management"><!-- --></A><TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""><TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"><TH ALIGN="left" COLSPAN="2"><FONT SIZE="+2"><A HREF="../package-summary.html">java.lang.management</A> 中 <A HREF="../MemoryUsage.html" title="java.lang.management 中的类">MemoryUsage</A> 的使用</FONT></TH></TR></TABLE> <P><TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""><TR BGCOLOR="#CCCCFF" CLASS="TableSubHeadingColor"><TH ALIGN="left" COLSPAN="2">返回 <A HREF="../MemoryUsage.html" title="java.lang.management 中的类">MemoryUsage</A> 的 <A HREF="../package-summary.html">java.lang.management</A> 中的方法</FONT></TH></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>static <A HREF="../MemoryUsage.html" title="java.lang.management 中的类">MemoryUsage</A></CODE></FONT></TD><TD><CODE><B>MemoryUsage.</B><B><A HREF="../MemoryUsage.html#from(javax.management.openmbean.CompositeData)">from</A></B>(javax.management.openmbean.CompositeData cd)</CODE><BR> 返回由给定 <tt>CompositeData</tt> 表示的 <tt>MemoryUsage</tt> 对象。</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> <A HREF="../MemoryUsage.html" title="java.lang.management 中的类">MemoryUsage</A></CODE></FONT></TD><TD><CODE><B>MemoryPoolMXBean.</B><B><A HREF="../MemoryPoolMXBean.html#getCollectionUsage()">getCollectionUsage</A></B>()</CODE><BR> 返回 Java 虚拟机最近回收了此内存池中的不使用的对象之后的内存使用量。</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> <A HREF="../MemoryUsage.html" title="java.lang.management 中的类">MemoryUsage</A></CODE></FONT></TD><TD><CODE><B>MemoryMXBean.</B><B><A HREF="../MemoryMXBean.html#getHeapMemoryUsage()">getHeapMemoryUsage</A></B>()</CODE><BR> 返回用于对象分配的堆的当前内存使用量。</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> <A HREF="../MemoryUsage.html" title="java.lang.management 中的类">MemoryUsage</A></CODE></FONT></TD><TD><CODE><B>MemoryMXBean.</B><B><A HREF="../MemoryMXBean.html#getNonHeapMemoryUsage()">getNonHeapMemoryUsage</A></B>()</CODE><BR> 返回 Java 虚拟机使用的非堆内存的当前使用量。</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> <A HREF="../MemoryUsage.html" title="java.lang.management 中的类">MemoryUsage</A></CODE></FONT></TD><TD><CODE><B>MemoryPoolMXBean.</B><B><A HREF="../MemoryPoolMXBean.html#getPeakUsage()">getPeakUsage</A></B>()</CODE><BR> 返回自 Java 虚拟机启动以来或自峰值重置以来此内存池的峰值内存使用量。</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> <A HREF="../MemoryUsage.html" title="java.lang.management 中的类">MemoryUsage</A></CODE></FONT></TD><TD><CODE><B>MemoryPoolMXBean.</B><B><A HREF="../MemoryPoolMXBean.html#getUsage()">getUsage</A></B>()</CODE><BR> 返回此内存池的内存使用量的估计数。</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> <A HREF="../MemoryUsage.html" title="java.lang.management 中的类">MemoryUsage</A></CODE></FONT></TD><TD><CODE><B>MemoryNotificationInfo.</B><B><A HREF="../MemoryNotificationInfo.html#getUsage()">getUsage</A></B>()</CODE><BR> 返回构造此通知时内存池的内存使用量。</TD></TR></TABLE> <P><TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""><TR BGCOLOR="#CCCCFF" CLASS="TableSubHeadingColor"><TH ALIGN="left" COLSPAN="2">参数类型为 <A HREF="../MemoryUsage.html" title="java.lang.management 中的类">MemoryUsage</A> 的 <A HREF="../package-summary.html">java.lang.management</A> 中的构造方法</FONT></TH></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD><CODE><B><A HREF="../MemoryNotificationInfo.html#MemoryNotificationInfo(java.lang.String, java.lang.management.MemoryUsage, long)">MemoryNotificationInfo</A></B>(<A HREF="../../String.html" title="java.lang 中的类">String</A> poolName, <A HREF="../MemoryUsage.html" title="java.lang.management 中的类">MemoryUsage</A> usage, long count)</CODE><BR> 构造一个 <tt>MemoryNotificationInfo</tt> 对象。</TD></TR></TABLE> <P><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> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../package-summary.html"><FONT CLASS="NavBarFont1"><B>软件包</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../MemoryUsage.html" title="java.lang.management 中的类"><FONT CLASS="NavBarFont1"><B>类</B></FONT></A> </TD> <TD BGCOLOR="#FFFFFF" CLASS="NavBarCell1Rev"> <FONT CLASS="NavBarFont1Rev"><B>使用</B></FONT> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../package-tree.html"><FONT CLASS="NavBarFont1"><B>树</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../../../deprecated-list.html"><FONT CLASS="NavBarFont1"><B>已过时</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../../../index-files/index-1.html"><FONT CLASS="NavBarFont1"><B>索引</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../../../help-doc.html"><FONT CLASS="NavBarFont1"><B>帮助</B></FONT></A> </TD> </TR></TABLE></TD><TD ALIGN="right" VALIGN="top" ROWSPAN=3><EM><b>Java<sup><font size=-2>TM</font></sup> 2 Platform<br>Standard Ed. 5.0</b></EM></TD></TR><TR><TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2"> 上一个 下一个</FONT></TD><TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2"> <A HREF="../../../../index.html@java_2Flang_2Fmanagement_2F_2Fclass-useMemoryUsage.html" target="_top"><B>框架</B></A> <A HREF="MemoryUsage.html" target="_top"><B>无框架</B></A> <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></TABLE><A NAME="skip-navbar_bottom"></A><!-- ======== 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