PluginClassLoader¶
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public class
PluginClassLoader
extends URLClassLoader¶ A PluginClassLoader is a class loader for loading classes which stored in the libraries specified in a plugin descriptor.
Author: Hugo Y. K. Lam See also:
Plugin
Constructors¶
PluginClassLoader¶
PluginClassLoader¶
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public
PluginClassLoader
(Plugin plugin, URL[] urls, ClassLoader parent)¶ Creates a new instance of PluginClassLoader.
Parameters: - plugin – the Plugin corresponds to this class loader.
- urls – the search paths.
- parent – the parent class loader.
PluginClassLoader¶
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public
PluginClassLoader
(Plugin plugin, URL[] urls, ClassLoader parent, URLStreamHandlerFactory factory)¶ Creates a new instance of PluginClassLoader.
Parameters: - plugin – the Plugin corresponds to this class loader.
- urls – the search paths.
- parent – the parent class loader.
- factory – the URL stream handler factory.
Methods¶
findClass¶
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protected Class
findClass
(String name)¶ 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. If the class is not found from the search paths of this class loader, it will be searched from the imported class loaders.
Parameters: - name – the name of the class.
Throws: - java.lang.ClassNotFoundException – if the class could not be found.
Returns: the resulting class.
findImportedClass¶
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protected Class
findImportedClass
(String name)¶ Finds and loads the class with the specified name from the imported class loaders.
Parameters: - name – the name of the class.
Throws: - java.lang.ClassNotFoundException – if the class could not be found.
Returns: the resulting class.
findResource¶
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public URL
findResource
(String name)¶ Finds the resource with the specified name on the URL search paths.
Parameters: - name – the name of the resource.
Returns: a URL for the resource, or null if the resource could not be found.
See also:
java.lang.ClassLoader.findResource(java.lang.String)
getPlugin¶
importClassLoader¶
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void
importClassLoader
(ClassLoader loader)¶ Imports a class loader.
Parameters: - loader – the class loader to be imported.
toString¶
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public String
toString
()¶ Returns a string representation of this class loader.
Returns: a string representation of this class loader. See also:
java.lang.Object.toString()