classUtils.loaders
Class JarClassLoader

java.lang.Object
  java.lang.ClassLoader
      java.security.SecureClassLoader
          java.net.URLClassLoader
              classUtils.loaders.JarClassLoader

public class JarClassLoader
extends java.net.URLClassLoader

A class loader for loading jar files, both local and remote.

Constructor Summary

JarClassLoader(java.net.URL url)
Creates a new JarClassLoader for the specified url.

Method Summary

java.lang.String	getMainClassName() Returns the name of the jar file main class, or null if no "Main-Class" manifest attributes was defined.
void	invokeClass(java.lang.String name, java.lang.String[] args) Invokes the application in this jar file given the name of the main class and an array of arguments.

Methods inherited from class java.net.URLClassLoader

findResource, findResources, getURLs, newInstance, newInstance

Methods inherited from class java.lang.ClassLoader

clearAssertionStatus, getParent, getResource, getResourceAsStream, getResources, getSystemClassLoader, getSystemResource, getSystemResourceAsStream, getSystemResources, loadClass, setClassAssertionStatus, setDefaultAssertionStatus, setPackageAssertionStatus

Methods inherited from class java.lang.Object

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

Constructor Detail

JarClassLoader

public JarClassLoader(java.net.URL url)

Creates a new JarClassLoader for the specified url.

Parameters:

url - the url of the jar file

Method Detail

getMainClassName

public java.lang.String getMainClassName()
                                  throws java.io.IOException

Returns the name of the jar file main class, or null if no "Main-Class" manifest attributes was defined.

Throws:

java.io.IOException

invokeClass

public void invokeClass(java.lang.String name,
                        java.lang.String[] args)
                 throws java.lang.ClassNotFoundException,
                        java.lang.NoSuchMethodException,
                        java.lang.reflect.InvocationTargetException

Invokes the application in this jar file given the name of the main class and an array of arguments. The class must define a static method "main" which takes an array of String arguemtns and is of return type "void".

Parameters:

name - the name of the main class

args - the arguments for the application

Throws:

java.lang.ClassNotFoundException - if the specified class could not be found

java.lang.NoSuchMethodException - if the specified class does not contain a "main" method

java.lang.reflect.InvocationTargetException - if the application raised an exception