com.compoze.collab.util
Class ObjectUtility

java.lang.Object
  com.compoze.collab.util.ObjectUtility

public class ObjectUtility
extends Object

Utility methods useful for objects and reflection.

Method Summary

static boolean	isClassInstanceOf(Class clazz1, Class clazz2) Determines if objects of a given class are instances of objects of another class.
static Object	newInstance(String sClass) Gets a new instance of a class using the default constructor.
static Object	newInstance(String sClass, Class[] parameterTypes, Object[] initArgs) Gets a new instance of a class using a constructor that takes the given paremters.
static boolean	objectsAreEqual(Object obj1, Object obj2) Determines if two objects are equal (allowing for null objects).

Methods inherited from class java.lang.Object

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

Method Detail

isClassInstanceOf

public static boolean isClassInstanceOf(Class clazz1,
                                        Class clazz2)

Determines if objects of a given class are instances of objects of another class.

Parameters

clazz1 - the superclass (not null)

clazz2 - the class to test (not null)

newInstance

public static Object newInstance(String sClass)
                          throws ClassNotFoundException,
                                 NoSuchMethodException,
                                 InstantiationException,
                                 IllegalAccessException,
                                 InvocationTargetException

Gets a new instance of a class using the default constructor.

Parameters

sClass - the fully qualified class name (not null)

Returns

the new instance (not null)

Throws

ClassNotFoundException

NoSuchMethodException

InstantiationException

IllegalAccessException

InvocationTargetException

newInstance

public static Object newInstance(String sClass,
                                 Class[] parameterTypes,
                                 Object[] initArgs)
                          throws ClassNotFoundException,
                                 NoSuchMethodException,
                                 InstantiationException,
                                 IllegalAccessException,
                                 InvocationTargetException

Gets a new instance of a class using a constructor that takes the given paremters.

Parameters

sClass - the fully qualified class name (not null)

parameterTypes - the parameters that the constructor takes.

initArgs - the objects to use when creating an instance with the specified constructor.

Returns

a new instance of type sClass.

Throws

ClassNotFoundException

NoSuchMethodException

InstantiationException

IllegalAccessException

InvocationTargetException

objectsAreEqual

public static boolean objectsAreEqual(Object obj1,
                                      Object obj2)

Determines if two objects are equal (allowing for null objects). The objects are equal if they are both null or obj1.equals(obj2) is true.

Parameters

obj1 - the first object (may be null)

obj2 - the second object (may be null)