java.net.URLClassLoader翻译

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">

<HTML>

<HEAD>

<TITLE>

URLClassLoader (Java 2 Platform SE v1.4.2)

</TITLE>

function windowTitle()

{

parent.document.title="URLClassLoader (Java 2 Platform SE v1.4.2)";

}

</SCRIPT>

</HEAD>

<TR>

<TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../overview-summary.html">Overview</A> </TD>

<TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="package-summary.html">Package</A> </TD>

<TD BGCOLOR="#FFFFFF" CLASS="NavBarCell1Rev">  Class </TD>

<TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../deprecated-list.html">Deprecated</A> </TD>

<TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../index-files/index-1.html">Index</A> </TD>

</TR>

</TABLE>

</TD>

JavaTM 2 Platform Std. Ed. v1.4.2

</TD>

</TR>

<TR>

<A HREF="../../java/net/URL.html" title="class in java.net">PREV CLASS</A>

<A HREF="../../java/net/URLConnection.html" title="class in java.net">NEXT CLASS</A></TD>

<A HREF="../../index.html" target="_top">FRAMES</A>

<A HREF="URLClassLoader.html" target="_top">NO FRAMES</A>

<!--

if(window==top) {

document.writeln('<A HREF="../../allclasses-noframe.html">All Classes</A>');

}

//-->

</SCRIPT>

<A HREF="../../allclasses-noframe.html">All Classes</A>

</NOSCRIPT>

</TD>

</TR>

<TR>

SUMMARY: NESTED | FIELD | <A HREF="#constructor_summary">CONSTR</A> | <A HREF="#method_summary">METHOD</A></TD>

DETAIL: FIELD | <A HREF="#constructor_detail">CONSTR</A> | <A HREF="#method_detail">METHOD</A></TD>

</TR>

</TABLE>

<HR>

<H2>

java.net

Class URLClassLoader</H2>

<PRE>

<A HREF="../../java/lang/Object.html" title="class in java.lang">java.lang.Object</A>

<IMG SRC="../../resources/inherit.gif" ALT="extended by"><A HREF="../../java/lang/ClassLoader.html" title="class in java.lang">java.lang.ClassLoader</A>

<IMG SRC="../../resources/inherit.gif" ALT="extended by"><A HREF="../../java/security/SecureClassLoader.html" title="class in java.security">java.security.SecureClassLoader</A>

<IMG SRC="../../resources/inherit.gif" ALT="extended by">java.net.URLClassLoader

</PRE>

<HR>

<DL>

<DT>public class URLClassLoader<DT>extends <A HREF="../../java/security/SecureClassLoader.html" title="class in java.security">SecureClassLoader</A></DL>

This class loader is used to load classes and resources from a search

path of URLs referring to both JAR files and directories. Any URL that

ends with a '/' is assumed to refer to a directory. Otherwise, the URL

is assumed to refer to a JAR file which will be opened as needed.

这个类加载器用于从指向JAR文件和目录的URL搜索路径中加载类和资源。任何以“/”结束的URL被认为是指向目录的，

否则，URL被认为指向需要打开的JAR文件。

The AccessControlContext of the thread that created the instance of

URLClassLoader will be used when subsequently loading classes and

resources.

当加载类和资源时，使用创建URLClassLoader实例的线程的AccessControlContext。

The classes that are loaded are by default granted permission only to

access the URLs specified when the URLClassLoader was created.

被加载的类在默认情况下，是被授权只能访问在创建URLClassLoader类时指定的URL。

<DL>

<DT>Since:</DT>

</DL>

<HR>

Constructor Summary</TD>

</TR>

<TD><CODE><A HREF="../../java/net/URLClassLoader.html#URLClassLoader(java.net.URL[])">URLClassLoader</A>(<A HREF="../../java/net/URL.html" title="class in java.net">URL</A>[] urls)</CODE>

          Constructs a new URLClassLoader for the specified URLs using the

default delegation parent <code>ClassLoader</code>.

使用默认的代理父ClassLoader构造一个指定URL的新的URLClassLoader。</TD>

</TR>

<TD><CODE><A HREF="../../java/net/URLClassLoader.html#URLClassLoader(java.net.URL[], java.lang.ClassLoader)">URLClassLoader</A>(<A HREF="../../java/net/URL.html" title="class in java.net">URL</A>[] urls,

<A HREF="../../java/lang/ClassLoader.html" title="class in java.lang">ClassLoader</A> parent)</CODE>

          Constructs a new URLClassLoader for the given URLs.

构造一个指定URL的新的URLClassLoader。</TD>

</TR>

<TD><CODE><A HREF="../../java/net/URLClassLoader.html#URLClassLoader(java.net.URL[], java.lang.ClassLoader, java.net.URLStreamHandlerFactory)">URLClassLoader</A>(<A HREF="../../java/net/URL.html" title="class in java.net">URL</A>[] urls,

<A HREF="../../java/lang/ClassLoader.html" title="class in java.lang">ClassLoader</A> parent,

<A HREF="../../java/net/URLStreamHandlerFactory.html" title="interface in java.net">URLStreamHandlerFactory</A> factory)</CODE>

          Constructs a new URLClassLoader for the specified URLs, parent

class loader, and URLStreamHandlerFactory.

构造一个指定URL、父类加载器和URLStreamHandlerFactory的新的URLClassLoader。</TD>

</TR>

</TABLE>

Method Summary</TD>

</TR>

<CODE>protected  void</CODE></TD>

<TD><CODE><A HREF="../../java/net/URLClassLoader.html#addURL(java.net.URL)">addURL</A>(<A HREF="../../java/net/URL.html" title="class in java.net">URL</A> url)</CODE>

          Appends the specified URL to the list of URLs to search for

classes and resources.

在用于搜索类和资源的URL列表中添加指定的URL。</TD>

</TR>

<CODE>protected  <A HREF="../../java/lang/Package.html" title="class in java.lang">Package</A></CODE></TD>

<TD><CODE><A HREF="../../java/net/URLClassLoader.html#definePackage(java.lang.String, java.util.jar.Manifest, java.net.URL)">definePackage</A>(<A HREF="../../java/lang/String.html" title="class in java.lang">String</A> name,

<A HREF="../../java/util/jar/Manifest.html" title="class in java.util.jar">Manifest</A> man,

          Defines a new package by name in this ClassLoader.

在此类加载器中用名称定义新的包。</TD>

</TR>

<CODE>protected  <A HREF="../../java/lang/Class.html" title="class in java.lang">Class</A></CODE></TD>

<TD><CODE><A HREF="../../java/net/URLClassLoader.html#findClass(java.lang.String)">findClass</A>(<A HREF="../../java/lang/String.html" title="class in java.lang">String</A> name)</CODE>

          Finds and loads the class with the specified name from the URL search

path.

从URL搜索路径查找并加载指定名称的类。</TD>

</TR>

<TD><CODE><A HREF="../../java/net/URLClassLoader.html#findResource(java.lang.String)">findResource</A>(<A HREF="../../java/lang/String.html" title="class in java.lang">String</A> name)</CODE>

          Finds the resource with the specified name on the URL search path.

从URL搜索路径查找并加载指定名称的资源。</TD>

</TR>

<CODE> <A HREF="../../java/util/Enumeration.html" title="interface in java.util">Enumeration</A></CODE></TD>

<TD><CODE><A HREF="../../java/net/URLClassLoader.html#findResources(java.lang.String)">findResources</A>(<A HREF="../../java/lang/String.html" title="class in java.lang">String</A> name)</CODE>

          Returns an Enumeration of URLs representing all of the resources

on the URL search path having the specified name.

返回含指定名称的URL搜索路径的所有资源的URL表示的枚举。</TD>

</TR>

<CODE>protected  <A HREF="../../java/security/PermissionCollection.html" title="class in java.security">PermissionCollection</A></CODE></TD>

<TD><CODE><A HREF="../../java/net/URLClassLoader.html#getPermissions(java.security.CodeSource)">getPermissions</A>(<A HREF="../../java/security/CodeSource.html" title="class in java.security">CodeSource</A> codesource)</CODE>

          Returns the permissions for the given codesource object.

返回给定代码资源对象的许可。</TD>

</TR>

<TD><CODE><A HREF="../../java/net/URLClassLoader.html#getURLs()">getURLs</A>()</CODE>

          Returns the search path of URLs for loading classes and resources.

返回用于加载类和资源的URL搜索路径。</TD>

</TR>

<CODE>static <A HREF="../../java/net/URLClassLoader.html" title="class in java.net">URLClassLoader</A></CODE></TD>

<TD><CODE><A HREF="../../java/net/URLClassLoader.html#newInstance(java.net.URL[])">newInstance</A>(<A HREF="../../java/net/URL.html" title="class in java.net">URL</A>[] urls)</CODE>

          Creates a new instance of URLClassLoader for the specified

URLs and default parent class loader.

创建一个使用指定URL和默认父类加载器的URLClassLoader实例。</TD>

</TR>

<CODE>static <A HREF="../../java/net/URLClassLoader.html" title="class in java.net">URLClassLoader</A></CODE></TD>

<TD><CODE><A HREF="../../java/net/URLClassLoader.html#newInstance(java.net.URL[], java.lang.ClassLoader)">newInstance</A>(<A HREF="../../java/net/URL.html" title="class in java.net">URL</A>[] urls,

<A HREF="../../java/lang/ClassLoader.html" title="class in java.lang">ClassLoader</A> parent)</CODE>

          Creates a new instance of URLClassLoader for the specified

URLs and parent class loader.

创建一个使用指定URL和父类加载器的URLClassLoader实例。</TD>

</TR>

</TABLE>

<TD>Methods inherited from class java.security.<A HREF="../../java/security/SecureClassLoader.html" title="class in java.security">SecureClassLoader</A></TD>

</TR>

<TD><CODE><A HREF="../../java/security/SecureClassLoader.html#defineClass(java.lang.String, byte[], int, int, java.security.CodeSource)">defineClass</A></CODE></TD>

</TR>

</TABLE>

<TD>Methods inherited from class java.lang.<A HREF="../../java/lang/ClassLoader.html" title="class in java.lang">ClassLoader</A></TD>

</TR>

<TD><CODE><A HREF="../../java/lang/ClassLoader.html#clearAssertionStatus()">clearAssertionStatus</A>, <A HREF="../../java/lang/ClassLoader.html#defineClass(byte[], int, int)">defineClass</A>, <A HREF="../../java/lang/ClassLoader.html#defineClass(java.lang.String, byte[], int, int)">defineClass</A>, <A HREF="../../java/lang/ClassLoader.html#defineClass(java.lang.String, byte[], int, int, java.security.ProtectionDomain)">defineClass</A>, <A HREF="../../java/lang/ClassLoader.html#definePackage(java.lang.String, java.lang.String, java.lang.String, java.lang.String, java.lang.String, java.lang.String, java.lang.String, java.net.URL)">definePackage</A>, <A HREF="../../java/lang/ClassLoader.html#findLibrary(java.lang.String)">findLibrary</A>, <A HREF="../../java/lang/ClassLoader.html#findLoadedClass(java.lang.String)">findLoadedClass</A>, <A HREF="../../java/lang/ClassLoader.html#findSystemClass(java.lang.String)">findSystemClass</A>, <A HREF="../../java/lang/ClassLoader.html#getPackage(java.lang.String)">getPackage</A>, <A HREF="../../java/lang/ClassLoader.html#getPackages()">getPackages</A>, <A HREF="../../java/lang/ClassLoader.html#getParent()">getParent</A>, <A HREF="../../java/lang/ClassLoader.html#getResource(java.lang.String)">getResource</A>, <A HREF="../../java/lang/ClassLoader.html#getResourceAsStream(java.lang.String)">getResourceAsStream</A>, <A HREF="../../java/lang/ClassLoader.html#getResources(java.lang.String)">getResources</A>, <A HREF="../../java/lang/ClassLoader.html#getSystemClassLoader()">getSystemClassLoader</A>, <A HREF="../../java/lang/ClassLoader.html#getSystemResource(java.lang.String)">getSystemResource</A>, <A HREF="../../java/lang/ClassLoader.html#getSystemResourceAsStream(java.lang.String)">getSystemResourceAsStream</A>, <A HREF="../../java/lang/ClassLoader.html#getSystemResources(java.lang.String)">getSystemResources</A>, <A HREF="../../java/lang/ClassLoader.html#loadClass(java.lang.String)">loadClass</A>, <A HREF="../../java/lang/ClassLoader.html#loadClass(java.lang.String, boolean)">loadClass</A>, <A HREF="../../java/lang/ClassLoader.html#resolveClass(java.lang.Class)">resolveClass</A>, <A HREF="../../java/lang/ClassLoader.html#setClassAssertionStatus(java.lang.String, boolean)">setClassAssertionStatus</A>, <A HREF="../../java/lang/ClassLoader.html#setDefaultAssertionStatus(boolean)">setDefaultAssertionStatus</A>, <A HREF="../../java/lang/ClassLoader.html#setPackageAssertionStatus(java.lang.String, boolean)">setPackageAssertionStatus</A>, <A HREF="../../java/lang/ClassLoader.html#setSigners(java.lang.Class, java.lang.Object[])">setSigners</A></CODE></TD>

</TR>

</TABLE>

<TD>Methods inherited from class java.lang.<A HREF="../../java/lang/Object.html" title="class in java.lang">Object</A></TD>

</TR>

<TD><CODE><A HREF="../../java/lang/Object.html#clone()">clone</A>, <A HREF="../../java/lang/Object.html#equals(java.lang.Object)">equals</A>, <A HREF="../../java/lang/Object.html#finalize()">finalize</A>, <A HREF="../../java/lang/Object.html#getClass()">getClass</A>, <A HREF="../../java/lang/Object.html#hashCode()">hashCode</A>, <A HREF="../../java/lang/Object.html#notify()">notify</A>, <A HREF="../../java/lang/Object.html#notifyAll()">notifyAll</A>, <A HREF="../../java/lang/Object.html#toString()">toString</A>, <A HREF="../../java/lang/Object.html#wait()">wait</A>, <A HREF="../../java/lang/Object.html#wait(long)">wait</A>, <A HREF="../../java/lang/Object.html#wait(long, int)">wait</A></CODE></TD>

</TR>

</TABLE>

Constructor Detail</TD>

</TR>

</TABLE>

URLClassLoader</H3>

<PRE>

public URLClassLoader(<A HREF="../../java/net/URL.html" title="class in java.net">URL</A>[] urls,

<A HREF="../../java/lang/ClassLoader.html" title="class in java.lang">ClassLoader</A> parent)</PRE>

<DL>

<DD>Constructs a new URLClassLoader for the given URLs. The URLs will be

searched in the order specified for classes and resources after first

searching in the specified parent class loader. Any URL that ends with

a '/' is assumed to refer to a directory. Otherwise, the URL is assumed

to refer to a JAR file which will be downloaded and opened as needed.

构造一个指定URL的新的URLClassLoader。首先在父类加载器搜索后，以指定的类和资源的顺序搜索URL。

任何以“/”结束的URL被认为是指向目录的，否则，URL被认为指向被下载且需要打开的JAR文件。

If there is a security manager, this method first

calls the security manager's <code>checkCreateClassLoader</code> method

to ensure creation of a class loader is allowed.

如果存在安全管理器，该方法首先调用安全管理器的checkCreateClassLoader方法以确认创建类加载器被允许。

<DT>Parameters:<DD><CODE>urls</CODE> - the URLs from which to load classes and resources

从其处加载类和资源的URL<DD><CODE>parent</CODE> - the parent class loader for delegation

代理的父类加载器

<DT>Throws:

<DD><CODE><A HREF="../../java/lang/SecurityException.html" title="class in java.lang">SecurityException</A></CODE> - if a security manager exists and its

<code>checkCreateClassLoader</code> method doesn't allow

creation of a class loader.

如果安全管理存在，它的checkCreateClassLoader方法不允许创建类加载器时抛出<DT>See Also:<DD><A HREF="../../java/lang/SecurityManager.html#checkCreateClassLoader()"><CODE>SecurityManager.checkCreateClassLoader()</CODE></A></DL>

<HR>

URLClassLoader</H3>

<PRE>

public URLClassLoader(<A HREF="../../java/net/URL.html" title="class in java.net">URL</A>[] urls)</PRE>

<DL>

<DD>Constructs a new URLClassLoader for the specified URLs using the

default delegation parent <code>ClassLoader</code>. The URLs will

be searched in the order specified for classes and resources after

first searching in the parent class loader. Any URL that ends with

a '/' is assumed to refer to a directory. Otherwise, the URL is

assumed to refer to a JAR file which will be downloaded and opened

as needed.

使用默认的代理父ClassLoader构造一个指定URL的新的URLClassLoader。首先在父类加载器搜索后，以指定的类和资源的顺序搜索URL。

任何以“/”结束的URL被认为是指向目录的，否则，URL被认为指向被下载且需要打开的JAR文件。

If there is a security manager, this method first

calls the security manager's <code>checkCreateClassLoader</code> method

to ensure creation of a class loader is allowed.

如果存在安全管理器，该方法首先调用安全管理器的checkCreateClassLoader方法以确认创建类加载器被允许。

<DT>Parameters:<DD><CODE>urls</CODE> - the URLs from which to load classes and resources

从其处加载类和资源的URL

<DT>Throws:

<DD><CODE><A HREF="../../java/lang/SecurityException.html" title="class in java.lang">SecurityException</A></CODE> - if a security manager exists and its

<code>checkCreateClassLoader</code> method doesn't allow

creation of a class loader.

<HR>

URLClassLoader</H3>

<PRE>

public URLClassLoader(<A HREF="../../java/net/URL.html" title="class in java.net">URL</A>[] urls,

<A HREF="../../java/lang/ClassLoader.html" title="class in java.lang">ClassLoader</A> parent,

<A HREF="../../java/net/URLStreamHandlerFactory.html" title="interface in java.net">URLStreamHandlerFactory</A> factory)</PRE>

<DL>

<DD>Constructs a new URLClassLoader for the specified URLs, parent

class loader, and URLStreamHandlerFactory. The parent argument

will be used as the parent class loader for delegation. The

factory argument will be used as the stream handler factory to

obtain protocol handlers when creating new URLs.

构造一个指定URL、父类加载器和URLStreamHandlerFactory的新的URLClassLoader。

parent参数用作代理的父类加载器。factory参数用作当创建新的URL时获得协议句柄的流句柄工厂。

If there is a security manager, this method first

calls the security manager's <code>checkCreateClassLoader</code> method

to ensure creation of a class loader is allowed.

如果存在安全管理器，该方法首先调用安全管理器的checkCreateClassLoader方法以确认创建类加载器被允许。

<DT>Parameters:<DD><CODE>urls</CODE> - the URLs from which to load classes and resources

从其处加载类和资源的URL<DD><CODE>parent</CODE> - the parent class loader for delegation

代理的父类加载器<DD><CODE>factory</CODE> - the URLStreamHandlerFactory to use when creating URLs

在创建URL时使用的URLStreamHandlerFactory

<DT>Throws:

<DD><CODE><A HREF="../../java/lang/SecurityException.html" title="class in java.lang">SecurityException</A></CODE> - if a security manager exists and its

<code>checkCreateClassLoader</code> method doesn't allow

creation of a class loader.

Method Detail</TD>

</TR>

</TABLE>

addURL</H3>

<PRE>

protected void addURL(<A HREF="../../java/net/URL.html" title="class in java.net">URL</A> url)</PRE>

<DL>

<DD>Appends the specified URL to the list of URLs to search for

classes and resources.

在用于搜索类和资源的URL列表中添加指定的URL。

<DT>Parameters:<DD><CODE>url</CODE> - the URL to be added to the search path of URLs 在URL搜索路径中添加的URL</DL>

</DD>

</DL>

<HR>

getURLs</H3>

<PRE>

public <A HREF="../../java/net/URL.html" title="class in java.net">URL</A>[] getURLs()</PRE>

<DL>

<DD>Returns the search path of URLs for loading classes and resources.

This includes the original list of URLs specified to the constructor,

along with any URLs subsequently appended by the addURL() method.

返回用于加载类和资源的URL搜索路径。包括指定给构造函数的原始URL列表，及使用addURL()方法后添加的URL。

<DT>Returns:<DD>the search path of URLs for loading classes and resources. 用于加载类和资源的URL搜索路径。</DL>

</DD>

</DL>

<HR>

findClass</H3>

<PRE>

protected <A HREF="../../java/lang/Class.html" title="class in java.lang">Class</A> findClass(<A HREF="../../java/lang/String.html" title="class in java.lang">String</A> name)

throws <A HREF="../../java/lang/ClassNotFoundException.html" title="class in java.lang">ClassNotFoundException</A></PRE>

<DL>

<DD>Finds and loads the class with the specified name from the URL search

path. Any URLs referring to JAR files are loaded and opened as needed

until the class is found.

从URL搜索路径查找并加载指定名称的类。加载指向JAR文件的URL并在需要时打开直到找到类。

<DT>Overrides:<DD><CODE><A HREF="../../java/lang/ClassLoader.html#findClass(java.lang.String)">findClass</A></CODE> in class <CODE><A HREF="../../java/lang/ClassLoader.html" title="class in java.lang">ClassLoader</A></CODE></DL>

</DD>

<DT>Parameters:<DD><CODE>name</CODE> - the name of the class 类名

<DT>Returns:<DD>the resulting class 结果类

<DT>Throws:

<DD><CODE><A HREF="../../java/lang/ClassNotFoundException.html" title="class in java.lang">ClassNotFoundException</A></CODE> - if the class could not be found 如果找不到该类抛出</DL>

</DD>

</DL>

<HR>

definePackage</H3>

<PRE>

protected <A HREF="../../java/lang/Package.html" title="class in java.lang">Package</A> definePackage(<A HREF="../../java/lang/String.html" title="class in java.lang">String</A> name,

<A HREF="../../java/util/jar/Manifest.html" title="class in java.util.jar">Manifest</A> man,

<A HREF="../../java/net/URL.html" title="class in java.net">URL</A> url)

throws <A HREF="../../java/lang/IllegalArgumentException.html" title="class in java.lang">IllegalArgumentException</A></PRE>

<DL>

<DD>Defines a new package by name in this ClassLoader. The attributes

contained in the specified Manifest will be used to obtain package

version and sealing information. For sealed packages, the additional

URL specifies the code source URL from which the package was loaded.

在此类加载器中用名称定义新的包。包含在指定的Manifest中的属性用于获得包版本和封装信息。

对于已封装包，附加URL指定来自加载的包的代码源URL。

<DT>Parameters:<DD><CODE>name</CODE> - the package name

包名<DD><CODE>man</CODE> - the Manifest containing package version and sealing

information

包含包版本和封装信息的Manifest<DD><CODE>url</CODE> - the code source url for the package, or null if none

用于包的代码源url，如果没有则为null

<DT>Returns:<DD>the newly defined Package object 新定义的包对象

<DT>Throws:

<DD><CODE><A HREF="../../java/lang/IllegalArgumentException.html" title="class in java.lang">IllegalArgumentException</A></CODE> - if the package name duplicates

an existing package either in this class loader or one

of its ancestors

如果包同现有包相同，或在此类加器或其父辈之一时抛出</DL>

</DD>

</DL>

<HR>

findResource</H3>

<PRE>

public <A HREF="../../java/net/URL.html" title="class in java.net">URL</A> findResource(<A HREF="../../java/lang/String.html" title="class in java.lang">String</A> name)</PRE>

<DL>

<DD>Finds the resource with the specified name on the URL search path.

从URL搜索路径查找并加载指定名称的资源。

<DT>Overrides:<DD><CODE><A HREF="../../java/lang/ClassLoader.html#findResource(java.lang.String)">findResource</A></CODE> in class <CODE><A HREF="../../java/lang/ClassLoader.html" title="class in java.lang">ClassLoader</A></CODE></DL>

</DD>

<DT>Parameters:<DD><CODE>name</CODE> - the name of the resource 资源名

<DT>Returns:<DD>a <code>URL</code> for the resource, or <code>null</code>

if the resource could not be found. 资源的URL，如果找不到该资源，返回null</DL>

</DD>

</DL>

<HR>

findResources</H3>

<PRE>

public <A HREF="../../java/util/Enumeration.html" title="interface in java.util">Enumeration</A> findResources(<A HREF="../../java/lang/String.html" title="class in java.lang">String</A> name)

throws <A HREF="../../java/io/IOException.html" title="class in java.io">IOException</A></PRE>

<DL>

<DD>Returns an Enumeration of URLs representing all of the resources

on the URL search path having the specified name.

返回含指定名称的URL搜索路径的所有资源的URL表示的枚举。

<DT>Overrides:<DD><CODE><A HREF="../../java/lang/ClassLoader.html#findResources(java.lang.String)">findResources</A></CODE> in class <CODE><A HREF="../../java/lang/ClassLoader.html" title="class in java.lang">ClassLoader</A></CODE></DL>

</DD>

<DT>Parameters:<DD><CODE>name</CODE> - the resource name 资源名

<DT>Returns:<DD>an <code>Enumeration</code> of <code>URL</code>s URL的枚举

<DT>Throws:

<DD><CODE><A HREF="../../java/io/IOException.html" title="class in java.io">IOException</A></CODE> - if an I/O exception occurs 如果发生I/O异常抛出</DL>

</DD>

</DL>

<HR>

getPermissions</H3>

<PRE>

protected <A HREF="../../java/security/PermissionCollection.html" title="class in java.security">PermissionCollection</A> getPermissions(<A HREF="../../java/security/CodeSource.html" title="class in java.security">CodeSource</A> codesource)</PRE>

<DL>

<DD>Returns the permissions for the given codesource object.

The implementation of this method first calls super.getPermissions

and then adds permissions based on the URL of the codesource.

返回给定代码资源对象的许可。此方法的实现首先调用super.getPermissions，然后

增加基于代码源URL的许可。

If the protocol is "file"

and the path specifies a file, then permission to read that

file is granted. If protocol is "file" and the path is

a directory, permission is granted to read all files

and (recursively) all files and subdirectories contained in

that directory.

如果协议为“file”且路径指定为一个文件，则授予读取此文件的许可。

如果协议为“file”且路径指定为一个目录，则授予读取此目录中包括子目录中所有文件的许可。

If the protocol is not "file", then

to connect to and accept connections from the URL's host is granted.

如果协议不是“file”，则授予连接到并被URL主机接受的许可。

<DT>Overrides:<DD><CODE><A HREF="../../java/security/SecureClassLoader.html#getPermissions(java.security.CodeSource)">getPermissions</A></CODE> in class <CODE><A HREF="../../java/security/SecureClassLoader.html" title="class in java.security">SecureClassLoader</A></CODE></DL>

</DD>

<DT>Parameters:<DD><CODE>codesource</CODE> - the codesource 代码源

<DT>Returns:<DD>the permissions granted to the codesource 授予代码源的许可</DL>

</DD>

</DL>

<HR>

newInstance</H3>

<PRE>

public static <A HREF="../../java/net/URLClassLoader.html" title="class in java.net">URLClassLoader</A> newInstance(<A HREF="../../java/net/URL.html" title="class in java.net">URL</A>[] urls,

<A HREF="../../java/lang/ClassLoader.html" title="class in java.lang">ClassLoader</A> parent)</PRE>

<DL>

<DD>Creates a new instance of URLClassLoader for the specified

URLs and parent class loader. If a security manager is

installed, the <code>loadClass</code> method of the URLClassLoader

returned by this method will invoke the

<code>SecurityManager.checkPackageAccess</code> method before

loading the class.

创建一个使用指定URL和父类加载器的URLClassLoader实例。如果装有安全管理器，

此方法返回的URLClassLoader的loadClass方法将在加载类前调用SecurityManager.checkPackageAccess方法。

<DT>Parameters:<DD><CODE>urls</CODE> - the URLs to search for classes and resources 用于类和资源搜索的URL<DD><CODE>parent</CODE> - the parent class loader for delegation

代理的父类加载器

<DT>Returns:<DD>the resulting class loader 结果类加载器</DL>

</DD>

</DL>

<HR>

newInstance</H3>

<PRE>

public static <A HREF="../../java/net/URLClassLoader.html" title="class in java.net">URLClassLoader</A> newInstance(<A HREF="../../java/net/URL.html" title="class in java.net">URL</A>[] urls)</PRE>

<DL>

<DD>Creates a new instance of URLClassLoader for the specified

URLs and default parent class loader. If a security manager is

installed, the <code>loadClass</code> method of the URLClassLoader

returned by this method will invoke the

<code>SecurityManager.checkPackageAccess</code> before

loading the class.

创建一个使用指定URL和默认父类加载器的URLClassLoader实例。如果装有安全管理器，

此方法返回的URLClassLoader的loadClass方法将在加载类前调用SecurityManager.checkPackageAccess方法。

<DT>Parameters:<DD><CODE>urls</CODE> - the URLs to search for classes and resources 用于类和资源搜索的URL

<DT>Returns:<DD>the resulting class loader 结果类加载器</DL>

</DD>

</DL>

<HR>

<TR>

<TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../overview-summary.html">Overview</A> </TD>

<TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="package-summary.html">Package</A> </TD>

<TD BGCOLOR="#FFFFFF" CLASS="NavBarCell1Rev">  Class </TD>

<TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../deprecated-list.html">Deprecated</A> </TD>

<TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../index-files/index-1.html">Index</A> </TD>

</TR>

</TABLE>

</TD>

JavaTM 2 Platform Std. Ed. v1.4.2

</TD>

</TR>

<TR>

<A HREF="../../java/net/URL.html" title="class in java.net">PREV CLASS</A>

<A HREF="../../java/net/URLConnection.html" title="class in java.net">NEXT CLASS</A></TD>

<A HREF="../../index.html" target="_top">FRAMES</A>

<A HREF="URLClassLoader.html" target="_top">NO FRAMES</A>

<!--

if(window==top) {

document.writeln('<A HREF="../../allclasses-noframe.html">All Classes</A>');

}

//-->

</SCRIPT>

<A HREF="../../allclasses-noframe.html">All Classes</A>

</NOSCRIPT>

</TD>

</TR>

<TR>

SUMMARY: NESTED | FIELD | <A HREF="#constructor_summary">CONSTR</A> | <A HREF="#method_summary">METHOD</A></TD>

DETAIL: FIELD | <A HREF="#constructor_detail">CONSTR</A> | <A HREF="#method_detail">METHOD</A></TD>

</TR>

</TABLE>

<HR>

<a href="http://java.sun.com/cgi-bin/bugreport.cgi">Submit a bug or feature</a> For further API reference and developer documentation, see <a href="../../../relnotes/devdocs-vs-specs.html">Java 2 SDK SE Developer Documentation</a>. That documentation contains more detailed, developer-targeted descriptions, with conceptual overviews, definitions of terms, workarounds, and working code examples. Copyright 2003 Sun Microsystems, Inc. All rights reserved. Use is subject to <a href="../../../relnotes/license.html">license terms</a>. Also see the <a href="http://java.sun.com/docs/redist.html">documentation redistribution policy</a>.

</BODY>

</HTML>