Class ClassLoaderUtils

java.lang.Object

org.globus.util.ClassLoaderUtils

public class ClassLoaderUtils
extends Object

Various classloader utils. Extends the standard ways of loading classes or resources with a fallback mechanism to the thread context classloader.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
private static class	ClassLoaderUtils.DummySecurityManager

Field Summary

Fields

Modifier and Type	Field	Description
private static ClassLoaderUtils.DummySecurityManager	MANAGER

Constructor Summary

Constructors

Constructor	Description
ClassLoaderUtils()

Method Summary

Modifier and Type	Method	Description
static Class	forName(String name)	Loads a specified class.
static Class[]	getClassContext()	Returns the current execution stack as an array of classes.
static Class	getClassContextAt(int i)	Returns a class at specified depth of the current execution stack.
static ClassLoader	getClassLoaderContextAt(int i)	Returns a classloader at specified depth of the current execution stack.
static InputStream	getResourceAsStream(String name)	Gets an InputStream to a resource of a specified name.
static Class<?>	loadClass(String className, Class<?> callingClass)
private static Class<?>	loadClass2(String className, Class<?> callingClass)

Methods inherited from class Object

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

Field Details

MANAGER

private static ClassLoaderUtils.DummySecurityManager MANAGER

Constructor Details

ClassLoaderUtils

public ClassLoaderUtils()

Method Details

getClassContext

public static Class[] getClassContext()

Returns the current execution stack as an array of classes.

The length of the array is the number of methods on the execution stack. The element at index 0 is the class of the currently executing method, the element at index 1 is the class of that method's caller, and so on.

Returns:

the execution stack.

getClassContextAt

public static Class getClassContextAt(int i)

Returns a class at specified depth of the current execution stack.

Returns:

the class at the specified depth of the current execution stack. Migth return null if depth is out of range.

getClassLoaderContextAt

public static ClassLoader getClassLoaderContextAt(int i)

Returns a classloader at specified depth of the current execution stack.

Returns:

the classloader at the specified depth of the current execution stack. Migth return null if depth is out of range.

getResourceAsStream

public static InputStream getResourceAsStream(String name)

Gets an InputStream to a resource of a specified name. First, the caller's classloader is used to load the resource and if it fails the thread's context classloader is used to load the resource.

forName

public static Class forName(String name)
                     throws ClassNotFoundException

Loads a specified class. First, the caller's classloader is used to load the class and if it fails the thread's context classloader is used to load the specified class.

Throws:

ClassNotFoundException

loadClass

public static Class<?> loadClass(String className,
 Class<?> callingClass)
                          throws ClassNotFoundException

Throws:

ClassNotFoundException

loadClass2

private static Class<?> loadClass2(String className,
 Class<?> callingClass)
                            throws ClassNotFoundException

Throws:

ClassNotFoundException