org.defne.utility.reflection
Class ReflectionUtils

java.lang.Object
  org.defne.utility.reflection.ReflectionUtils

public final class ReflectionUtils
extends Object

Reflection related utility class.

Version:

$Rev$ $Date$

Field Summary

static Class<?>[]

EMPTY Empty class array

Method Summary

static Object	callConstructor(Constructor<?> constructor, Object[] arguments)
static Class<?>	getClassFromName(String className) Load class with the given name and returns it.
static <T> Constructor<T>	getConstructor(Class<T> clazz, List<Class<?>> arguments) Gets class constructor with the given parameters..
static <T> Object	getNewObject(Class<T> clazz) Gets class instance.
static ClassLoader	getSystemClassLoader() Gets system class loader.
static ClassLoader	getThreadClassLoader() Gets current thread classloader.
static Object	invokeMethod(Object instance, Method method, Object[] arguments) Calls the given object's method with supplied arguments.
static void	main(String[] args)
static void	throwDefneExceptionFromPrivilege(PrivilegedActionException e)

Methods inherited from class java.lang.Object

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

Field Detail

EMPTY

public static final Class<?>[] EMPTY

Empty class array

Method Detail

getThreadClassLoader

public static ClassLoader getThreadClassLoader()

Gets current thread classloader.

This class loader works that is explained in the Java EE specifications.

Returns:

current thread classloader

getNewObject

public static <T> Object getNewObject(Class<T> clazz)

Gets class instance.

Type Parameters:

T - class type

Parameters:

clazz - class of the object

Returns:

the new instance of class

getConstructor

public static <T> Constructor<T> getConstructor(Class<T> clazz,
                                                List<Class<?>> arguments)

Gets class constructor with the given parameters..

Type Parameters:

T - class type

Parameters:

clazz - class of the object

arguments - contructor arguments

Returns:

class constructor

getSystemClassLoader

public static ClassLoader getSystemClassLoader()

Gets system class loader.

Returns:

system class loader

invokeMethod

public static Object invokeMethod(Object instance,
                                  Method method,
                                  Object[] arguments)

Calls the given object's method with supplied arguments.

Parameters:

instance - object instance

method - object method

arguments - method arguments

Returns:

the final result

Throws:

DefneException - if any runtime exception occurs

getClassFromName

public static Class<?> getClassFromName(String className)

Load class with the given name and returns it. If not succesfull, return null.

Parameters:

className - class name

Returns:

the class with the given name

callConstructor

public static Object callConstructor(Constructor<?> constructor,
                                     Object[] arguments)

throwDefneExceptionFromPrivilege

public static void throwDefneExceptionFromPrivilege(PrivilegedActionException e)

main

public static void main(String[] args)