com.croftsoft.core.lang.classloader
Class CacheClassLoader

java.lang.Object
  java.lang.ClassLoader
      com.croftsoft.core.lang.classloader.CustomClassLoader
          com.croftsoft.core.lang.classloader.NetClassLoader
              com.croftsoft.core.lang.classloader.CacheClassLoader

public class CacheClassLoader
extends NetClassLoader

Version:

1998-05-30

Author:

David Wallace Croft

Field Summary

protected File	cacheDir
protected Hashtable	cacheHashtable A list of pathnames of cached files keyed by remote URL name.

Fields inherited from class com.croftsoft.core.lang.classloader.NetClassLoader

codebaseURL

Constructor Summary

CacheClassLoader(URL codebaseURL, File cacheDir)
Ex: "http://www.mysticmayhem.com/lib/", "C:\jcache\www.mysticmayhem.com\"

Method Summary

InputStream	getResourceAsStream(String name) Loads a stream from the URL given by getResource(name).
static void	launchMain(String codebaseURLName, String mainClassName, String cacheDirName, String[] args) Loads a remote class and launches its main() method.
static void	main(String[] args) Loads a remote class and launches its main() method.

Methods inherited from class com.croftsoft.core.lang.classloader.NetClassLoader

createImage, getResource, invokeMain, launchMain, loadClassData

Methods inherited from class com.croftsoft.core.lang.classloader.CustomClassLoader

loadClass, parsePackageName

Methods inherited from class java.lang.ClassLoader

clearAssertionStatus, defineClass, defineClass, defineClass, defineClass, definePackage, findClass, findLibrary, findLoadedClass, findResource, findResources, findSystemClass, getPackage, getPackages, getParent, getResources, getSystemClassLoader, getSystemResource, getSystemResourceAsStream, getSystemResources, loadClass, resolveClass, setClassAssertionStatus, setDefaultAssertionStatus, setPackageAssertionStatus, setSigners

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

cacheHashtable

protected Hashtable cacheHashtable

A list of pathnames of cached files keyed by remote URL name.

cacheDir

protected File cacheDir

Constructor Detail

CacheClassLoader

public CacheClassLoader(URL codebaseURL,
                        File cacheDir)

Ex: "http://www.mysticmayhem.com/lib/", "C:\jcache\www.mysticmayhem.com\"

Method Detail

main

public static void main(String[] args)
                 throws Exception

Loads a remote class and launches its main() method.

Parameters:

Command-line - arguments:

1. The URL name for the codebase.
2. The name of the class with the "main(args)" method.
3. The name of the local persistent resource cache directory.
4. Subsequent arguments to be passed to the invoked main method.

Example

Throws:

Exception

launchMain

public static void launchMain(String codebaseURLName,
                              String mainClassName,
                              String cacheDirName,
                              String[] args)
                       throws ClassNotFoundException,
                              IllegalAccessException,
                              MalformedURLException

Loads a remote class and launches its main() method.

Throws:

ClassNotFoundException

IllegalAccessException

MalformedURLException

getResourceAsStream

public InputStream getResourceAsStream(String name)

Description copied from class: NetClassLoader

Loads a stream from the URL given by getResource(name). Does not use a cache.

Overrides:

getResourceAsStream in class NetClassLoader