net.sourceforge.fluxion.pussycat.util
Class JarClassLoader

java.lang.Object
  java.lang.ClassLoader
      java.security.SecureClassLoader
          java.net.URLClassLoader
              net.sourceforge.fluxion.pussycat.util.JarClassLoader

public class JarClassLoader
extends java.net.URLClassLoader

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

Author:

Rob Davey

Constructor Summary

JarClassLoader(java.lang.String s)
Creates a new JarClassLoader for the specified string which is then converted to a URL.

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

Method Summary

void	getAllMethods(java.lang.String name) Gets the allMethods attribute of the JarClassLoader object
java.lang.String	getMainClassName() Returns the name of the jar file main class, or null if no "Main-Class" manifest attributes was defined.
java.lang.Object	instantiate(java.lang.String name) Description of the Method
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.
void	invokeClass(java.lang.String name, java.lang.String method, java.lang.String[] args) Description of the Method

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

JarClassLoader

public JarClassLoader(java.net.URL url)

Creates a new JarClassLoader for the specified url.

Parameters:

url - the url of the jar file

JarClassLoader

public JarClassLoader(java.lang.String s)
               throws java.net.MalformedURLException

Creates a new JarClassLoader for the specified string which is then converted to a URL. Windows workaround.

Parameters:

s - Description of the Parameter

Throws:

java.net.MalformedURLException - Description of the Exception

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.

Returns:

The mainClassName value

Throws:

java.io.IOException - Description of the Exception

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 arguments 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

invokeClass

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

Description of the Method

Parameters:

name - Description of the Parameter

method - Description of the Parameter

args - Description of the Parameter

Throws:

java.lang.ClassNotFoundException - Description of the Exception

java.lang.NoSuchMethodException - Description of the Exception

java.lang.reflect.InvocationTargetException - Description of the Exception

instantiate

public java.lang.Object instantiate(java.lang.String name)
                             throws java.lang.ClassNotFoundException,
                                    java.lang.InstantiationException,
                                    java.lang.IllegalAccessException

Description of the Method

Parameters:

name - Description of the Parameter

Returns:

Description of the Return Value

Throws:

java.lang.ClassNotFoundException - Description of the Exception

java.lang.InstantiationException - Description of the Exception

java.lang.IllegalAccessException - Description of the Exception

getAllMethods

public void getAllMethods(java.lang.String name)
                   throws java.lang.ClassNotFoundException,
                          java.lang.SecurityException

Gets the allMethods attribute of the JarClassLoader object

Parameters:

name - Description of the Parameter

Throws:

java.lang.ClassNotFoundException - Description of the Exception

java.lang.SecurityException - Description of the Exception