org.slim3.commons.util
Class ClassUtil

java.lang.Object
  org.slim3.commons.util.ClassUtil

public final class ClassUtil
extends Object

A utility class for Class.

Since:

3.0

Author:

higa

Method Summary

static Class<?>	forName(String className) Returns a class instance.
static Constructor<?>	getConstructor(Class<?> clazz, Class<?>... parameterTypes) Returns the constructor.
static boolean	isPresent(String className) Determines if the class is present.
static <T> T	newInstance(Class<?> clazz) Creates a new instance.
static <T> T	newInstance(String className) Creates a new instance.

Methods inherited from class java.lang.Object

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

Method Detail

forName

public static Class<?> forName(String className)

Returns a class instance.

Parameters:

className - the class name

Returns:

a class instance

Throws:

ClassNotFoundRuntimeException - if ClassNotFoundException is encountered

newInstance

public static <T> T newInstance(Class<?> clazz)

Creates a new instance.

Type Parameters:

T - the target type

Parameters:

clazz - the class

Returns:

a new instance

Throws:

InstantiationRuntimeException - if InstantiationException is encountered.

IllegalAccessRuntimeException - if IllegalAccessException is encountered.

newInstance

public static <T> T newInstance(String className)

Creates a new instance.

Type Parameters:

T - the target type

Parameters:

className - the class name

Returns:

a new instance

getConstructor

public static Constructor<?> getConstructor(Class<?> clazz,
                                            Class<?>... parameterTypes)

Returns the constructor.

Parameters:

clazz - the target class

parameterTypes - the parameter types.

Returns:

the constructor

isPresent

public static boolean isPresent(String className)

Determines if the class is present.

Parameters:

className - the class name

Returns:

whether the class is present