public URL getResource(String name)的教训

最新推荐文章于 2022-09-22 13:00:20 发布

原创最新推荐文章于 2022-09-22 13:00:20 发布 · 1.3k 阅读

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#string #url #delegates #object #class #parameters

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博客介绍了getResource方法，该方法用于查找给定名称的资源，会委托对象的类加载器进行查找。还说明了在委托前如何根据给定资源名构造绝对资源名，同时介绍了方法的参数、返回值及适用JDK版本，指出返回的“/”表示类路径。

getResource
public URL getResource(String name)

Finds a resource with a given name. The rules for searching resources associated with a given class are implemented by the defining class loader of the class. This method delegates to this object's class loader. If this object was loaded by the bootstrap class loader, the method delegates to ClassLoader.getSystemResource(java.lang.String).
Before delegation, an absolute resource name is constructed from the given resource name using this algorithm:

If the name begins with a '/' ('/u002f'), then the absolute name of the resource is the portion of the name following the '/'.
Otherwise, the absolute name is of the following form:
modified_package_name/name
Where the modified_package_name is the package name of this object with '/' substituted for '.' ('/u002e').

Parameters:
name - name of the desired resource
Returns:
A URL object or null if no resource with this name is found
Since:
JDK1.1

返回的"/"表示类路径，而不是文件分隔符