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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 09:52:54 CST 2005 --><META http-equiv="Content-Type" content="text/html; charset=gb2312"><TITLE>类 java.lang.Package 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.Package 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>&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="#EEEEFF" CLASS="NavBarCell1">    <A HREF="../Package.html" title="java.lang 中的类"><FONT CLASS="NavBarFont1"><B>类</B></FONT></A>&nbsp;</TD>  <TD BGCOLOR="#FFFFFF" CLASS="NavBarCell1Rev"> &nbsp;<FONT CLASS="NavBarFont1Rev"><B>使用</B></FONT>&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;上一个&nbsp;&nbsp;下一个</FONT></TD><TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2">  <A HREF="../../../index.html@java_2Flang_2F_2Fclass-usePackage.html" target="_top"><B>框架</B></A>  &nbsp;&nbsp;<A HREF="Package.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></TABLE><A NAME="skip-navbar_top"></A><!-- ========= END OF TOP NAVBAR ========= --><HR><CENTER><H2><B>类 java.lang.Package<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="../Package.html" title="java.lang 中的类">Package</A> 的软件包</FONT></TH></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD><A HREF="#java.lang"><B>java.lang</B></A></TD><TD>提供利用 Java 编程语言进行程序设计的基础类。&nbsp;</TD></TR></TABLE>&nbsp;<P><A NAME="java.lang"><!-- --></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</A> 中 <A HREF="../Package.html" title="java.lang 中的类">Package</A> 的使用</FONT></TH></TR></TABLE>&nbsp;<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="../Package.html" title="java.lang 中的类">Package</A> 的 <A HREF="../package-summary.html">java.lang</A> 中的方法</FONT></TH></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>protected &nbsp;<A HREF="../Package.html" title="java.lang 中的类">Package</A></CODE></FONT></TD><TD><CODE><B>ClassLoader.</B><B><A HREF="../ClassLoader.html#definePackage(java.lang.String, java.lang.String, java.lang.String, java.lang.Strin01823549FD">definePackage</A></B>(<A HREF="../String.html" title="java.lang 中的类">String</A>&nbsp;name,              <A HREF="../String.html" title="java.lang 中的类">String</A>&nbsp;specTitle,              <A HREF="../String.html" title="java.lang 中的类">String</A>&nbsp;specVersion,              <A HREF="../String.html" title="java.lang 中的类">String</A>&nbsp;specVendor,              <A HREF="../String.html" title="java.lang 中的类">String</A>&nbsp;implTitle,              <A HREF="../String.html" title="java.lang 中的类">String</A>&nbsp;implVersion,              <A HREF="../String.html" title="java.lang 中的类">String</A>&nbsp;implVendor,              java.net.URL&nbsp;sealBase)</CODE><BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;使用此 <tt>ClassLoader</tt> 中的名称来定义包。</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>&nbsp;<A HREF="../Package.html" title="java.lang 中的类">Package</A></CODE></FONT></TD><TD><CODE><B>Class.</B><B><A HREF="../Class.html#getPackage()">getPackage</A></B>()</CODE><BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;获取此类的包。</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>protected &nbsp;<A HREF="../Package.html" title="java.lang 中的类">Package</A></CODE></FONT></TD><TD><CODE><B>ClassLoader.</B><B><A HREF="../ClassLoader.html#getPackage(java.lang.String)">getPackage</A></B>(<A HREF="../String.html" title="java.lang 中的类">String</A>&nbsp;name)</CODE><BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;返回由此类加载器或其任何祖先所定义的 <tt>Package</tt>。</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>static&nbsp;<A HREF="../Package.html" title="java.lang 中的类">Package</A></CODE></FONT></TD><TD><CODE><B>Package.</B><B><A HREF="../Package.html#getPackage(java.lang.String)">getPackage</A></B>(<A HREF="../String.html" title="java.lang 中的类">String</A>&nbsp;name)</CODE><BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;通过调用方的 <code>ClassLoader</code> 实例中的名称找到一个包。</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>protected &nbsp;<A HREF="../Package.html" title="java.lang 中的类">Package</A>[]</CODE></FONT></TD><TD><CODE><B>ClassLoader.</B><B><A HREF="../ClassLoader.html#getPackages()">getPackages</A></B>()</CODE><BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;返回此类加载器及其祖先所定义的所有 <tt>Package</tt>。</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>static&nbsp;<A HREF="../Package.html" title="java.lang 中的类">Package</A>[]</CODE></FONT></TD><TD><CODE><B>Package.</B><B><A HREF="../Package.html#getPackages()">getPackages</A></B>()</CODE><BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;获得调用方的 <code>ClassLoader</code> 实例当前已知的所有包。</TD></TR></TABLE>&nbsp;<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>&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="#EEEEFF" CLASS="NavBarCell1">    <A HREF="../Package.html" title="java.lang 中的类"><FONT CLASS="NavBarFont1"><B>类</B></FONT></A>&nbsp;</TD>  <TD BGCOLOR="#FFFFFF" CLASS="NavBarCell1Rev"> &nbsp;<FONT CLASS="NavBarFont1Rev"><B>使用</B></FONT>&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;上一个&nbsp;&nbsp;下一个</FONT></TD><TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2">  <A HREF="../../../index.html@java_2Flang_2F_2Fclass-usePackage.html" target="_top"><B>框架</B></A>  &nbsp;&nbsp;<A HREF="Package.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></TABLE><A NAME="skip-navbar_bottom"></A><!-- ======== END OF BOTTOM NAVBAR ======= --><HR><font size="-1"><a href="../../../../../../../../../java.sun.com/cgi-bin/bugreport.cgi">提交错误或意见</a><br>有关更多的 API 参考资料和开发人员文档,请参阅 <a href="../../../../../../../../../java.sun.com/j2se/1.5.0/docs/relnotes/devdocs-vs-specs.html">Java 2 SDK SE 开发人员文档</a>。该文档包含更详细的、面向开发人员的描述,以及总体概述、术语定义、使用技巧和工作代码示例。 <p>版权所有 2004 Sun Microsystems, Inc. 保留所有权利。 请遵守<a href="../../../../../../../../../java.sun.com/j2se/1.5.0/docs/relnotes/license.html">许可证条款</a>。另请参阅<a href="../../../../../../../../../java.sun.com/docs/redist.html">文档重新分发政策</a>。</font></BODY></HTML>

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