uk.ac.starlink.util
Class AuxClassLoader

java.lang.Object
  extended by java.lang.ClassLoader
      extended by java.security.SecureClassLoader
          extended by java.net.URLClassLoader
              extended by uk.ac.starlink.util.AuxClassLoader

public class AuxClassLoader
extends java.net.URLClassLoader

This class provides a ClassLoader which looks on a given class path. In cases where an application is invoked using the extension mechanism (normally using java -jar) and hence gets its classpath from somewhere other than the environment (e.g. $CLASSPATH), this can pick up a different set of classes than the default/system ClassLoader. This will typically be of use where code wants to permit 'pluggability', that is allowing the user to make classes available to the system other than those known about at the build/install time for the rest of the application/infrastructure framework.

The default delegation ClassLoader is used as the parent of this one, so that the system classloader(?) will be queried for any classes before they are searched for on the given class.


Constructor Summary
AuxClassLoader(java.lang.String classpath)
          Constructs a ClassLoader which will look on a given path.
 
Method Summary
 
Methods inherited from class java.net.URLClassLoader
addURL, definePackage, findClass, findResource, findResources, getPermissions, getURLs, newInstance, newInstance
 
Methods inherited from class java.security.SecureClassLoader
defineClass, defineClass
 
Methods inherited from class java.lang.ClassLoader
clearAssertionStatus, defineClass, defineClass, defineClass, defineClass, definePackage, findLibrary, findLoadedClass, findSystemClass, getPackage, getPackages, getParent, getResource, getResourceAsStream, getResources, getSystemClassLoader, getSystemResource, getSystemResourceAsStream, getSystemResources, loadClass, loadClass, resolveClass, setClassAssertionStatus, setDefaultAssertionStatus, setPackageAssertionStatus, setSigners
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Constructor Detail

AuxClassLoader

public AuxClassLoader(java.lang.String classpath)
Constructs a ClassLoader which will look on a given path.

Parameters:
classpath - a class path specified in the same format as the java.class.path system property