net.janino
Class JavaSourceClassLoader

java.lang.Object
  |
  +--java.lang.ClassLoader
        |
        +--net.janino.JavaSourceClassLoader

public final class JavaSourceClassLoader

extends java.lang.ClassLoader

A java.lang.ClassLoader that, unlike usual java.lang.ClassLoaders, does not load byte code, but reads Java^TM source code and then scans, parses, compiles and loads it into the virtual machine.

Constructor Summary

JavaSourceClassLoader(java.lang.ClassLoader parentClassLoader, java.io.File[] optionalSourcePath, java.lang.String optionalCharacterEncoding, int debuggingInformation)
Set up a JavaSourceClassLoader that finds Java^TM source code in a file that resides in either of the directories specified by the given source path.

Method Summary

protected java.lang.Class	findClass(java.lang.String name) Implementation of java.lang.ClassLoader.findClass(String).
static void	main(java.lang.String[] args) Read JavaTM source code for a given class name, scan, parse, compile and load it into the virtual machine, and invoke its "main()" method.

Methods inherited from class java.lang.ClassLoader

defineClass, defineClass, defineClass, definePackage, findLibrary, findLoadedClass, findResource, findResources, findSystemClass, getPackage, getPackages, getParent, getResource, getResourceAsStream, getResources, getSystemClassLoader, getSystemResource, getSystemResourceAsStream, getSystemResources, loadClass, loadClass, resolveClass, setSigners

Methods inherited from class java.lang.Object

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

Constructor Detail

JavaSourceClassLoader

public JavaSourceClassLoader(java.lang.ClassLoader parentClassLoader,
                             java.io.File[] optionalSourcePath,
                             java.lang.String optionalCharacterEncoding,
                             int debuggingInformation)

Set up a JavaSourceClassLoader that finds Java^TM source code in a file that resides in either of the directories specified by the given source path.

Parameters:

parent -

optionalSourcePath - A collection of directories that are searched for Java^TM source files in the given order

optionalCharacterEncoding - The encoding of the Java^TM source files (null for platform default encoding)

Method Detail

main

public static void main(java.lang.String[] args)

Read Java^TM source code for a given class name, scan, parse, compile and load it into the virtual machine, and invoke its "main()" method.

Usage is as follows:

   java [ java-option ] net.janino.JavaSourceClassLoader [ option ] ... class-name [ arg ] ... 
     java-option Any valid option for the Java Virtual Machine (e.g. "-classpath colon-separated-list-of-class-directories") 
     option:
       -sourcepath colon-separated-list-of-source-directories 
       -encoding character-encoding
 

findClass

protected java.lang.Class findClass(java.lang.String name)
                             throws java.lang.ClassNotFoundException

Implementation of java.lang.ClassLoader.findClass(String).

Overrides:

findClass in class java.lang.ClassLoader

Throws:

java.lang.ClassNotFoundException -

TunnelException - wraps a Scanner.ScanException

TunnelException - wraps a Parser.ParseException

TunnelException - wraps a IOException