org.openimaj.util.reflection

Class ReflectionUtils

java.lang.Object

org.openimaj.util.reflection.ReflectionUtils

public class ReflectionUtils
extends Object

Utility methods for java reflection

Author:

Jonathon Hare (jsh2@ecs.soton.ac.uk)

Constructor Summary

Constructors

Constructor and Description
ReflectionUtils()

Method Summary

Methods

Modifier and Type	Method and Description
static Class<?>	getClass(Type type) Get the underlying class for a type, or null if the type is a variable type.
static Method	getMain(Class<?> clz) Get the "public static main(String [] args)" method of the class, or null if it doesn't have one.
static <T> List<Class<?>>	getTypeArguments(Class<T> baseClass, Class<? extends T> childClass) Get the actual type arguments a child class has used to extend a generic base class.
static boolean	hasMain(Class<?> clz) Test if a class has a "public static main(String [] args)" method

Methods inherited from class java.lang.Object

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

Constructor Detail

ReflectionUtils

public ReflectionUtils()

Method Detail

hasMain

public static boolean hasMain(Class<?> clz)

Test if a class has a "public static main(String [] args)" method

Parameters:

clz - the class

Returns:

true if main method exists; false otherwise

getMain

public static Method getMain(Class<?> clz)

Get the "public static main(String [] args)" method of the class, or null if it doesn't have one.

Parameters:

clz - the class

Returns:

the main method, or null if it doesn't exist

getClass

public static Class<?> getClass(Type type)

Get the underlying class for a type, or null if the type is a variable type.

Parameters:

type - the type

Returns:

the underlying class

getTypeArguments

public static <T> List<Class<?>> getTypeArguments(Class<T> baseClass,
                                  Class<? extends T> childClass)

Get the actual type arguments a child class has used to extend a generic base class. An implementation kindly described in this blog post: http://www.artima.com/weblogs/viewpost.jsp?thread=208860 by

Type Parameters:

T - The type of the base class

Parameters:

baseClass - the base class

childClass - the child class

Returns:

a list of the raw classes for the actual type arguments.