org.josef.util

Class ObjectUtil

java.lang.Object

org.josef.util.ObjectUtil

@Status(stage=DEVELOPMENT,
        unitTests=COMPLETE)
public final class ObjectUtil
extends Object

Generic utility class directly related to Object.

Version:

1.0 $Revision: 5814 $

Author:

Kees Schotanus

Method Summary

Modifier and Type	Method and Description
static String	getObjectName(Object object) Gets the object name from the supplied object.
static boolean	isEqual(Object left, Object right) Determines whether the left object equals the right object.

Methods inherited from class java.lang.Object

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

Method Detail

getObjectName

public static String getObjectName(Object object)

Gets the object name from the supplied object.
The object name is equal to the simple class name of the supplied object with the only difference that the first character is in lower case. When the supplied object is of type java.lang.String, this method would return "string".
This method can for example be used to get the java bean name from an instance.

Parameters:

object - The object to get the name for.

Returns:

The object name of the supplied instance.

Throws:

NullPointerException - When the supplied object is null.

isEqual

public static boolean isEqual(Object left,
                              Object right)

Determines whether the left object equals the right object.
Use this method to implement your equals method. Without this method you would write code like this:

boolean result =
     left == null && right == null || (left != null && right != null && left.equals(right));
 

This code results in a high McCabe complexity. With this utility method, you simple write:
boolean result = ObjectUtil.isEqual(left, right);.

Parameters:

left - The left object.

right - The right object.

Returns:

True when the left object is equal to the right object, otherwise false is returned.