jodd.util

Class ObjectUtil

java.lang.Object

jodd.util.ObjectUtil

public class ObjectUtil
extends java.lang.Object

Various object utilities.

Constructor Summary

Constructors

Constructor and Description
ObjectUtil()

Method Summary

Methods

Modifier and Type	Method and Description
static java.lang.Object	byteArrayToObject(byte[] data) De-serialize an object from byte array.
static java.lang.Object	clone(java.lang.Object source) Clone an object by invoking it's clone() method, even if it is not overridden.
static java.lang.Object	cloneViaSerialization(java.io.Serializable obj) Create object copy using serialization mechanism.
static boolean	containsElement(java.lang.Object obj, java.lang.Object element) Returns true if first argument contains provided element.
static boolean	equals(java.lang.Object obj1, java.lang.Object obj2) Safely compares two objects just like equals() would, except it allows any of the 2 objects to be null.
static boolean	equalsEx(java.lang.Object obj1, java.lang.Object obj2) Compares two objects or two object arrays.
static boolean	equalsType(java.lang.Object object, java.lang.Object thiz) Non-symmetric utility for comparing the types of two objects.
static int	length(java.lang.Object obj) Returns length of the object.
static byte[]	objectToByteArray(java.lang.Object obj) Serialize an object to byte array.
static java.lang.Object	readObject(java.io.File source) Reads serialized object from the file.
static java.lang.Object	readObject(java.lang.String source)
static void	writeObject(java.io.File dest, java.lang.Object object) Writes serializable object to a file.
static void	writeObject(java.lang.String dest, java.lang.Object object)

Methods inherited from class java.lang.Object

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

Constructor Detail

ObjectUtil

public ObjectUtil()

Method Detail

equals

public static boolean equals(java.lang.Object obj1,
             java.lang.Object obj2)

Safely compares two objects just like equals() would, except it allows any of the 2 objects to be null.

Returns:

true if arguments are equal, otherwise false

equalsEx

public static boolean equalsEx(java.lang.Object obj1,
               java.lang.Object obj2)

Compares two objects or two object arrays. Useful for Object.equals(Object).

See Also:

equals(Object, Object)

equalsType

public static boolean equalsType(java.lang.Object object,
                 java.lang.Object thiz)

Non-symmetric utility for comparing the types of two objects. Might be useful for Object.equals(Object) if instanceof is not used.

Parameters:

object - equals() argument

thiz - current class that overrides equals()

clone

public static java.lang.Object clone(java.lang.Object source)
                              throws java.lang.CloneNotSupportedException

Clone an object by invoking it's clone() method, even if it is not overridden.

Throws:

java.lang.CloneNotSupportedException

cloneViaSerialization

public static java.lang.Object cloneViaSerialization(java.io.Serializable obj)
                                              throws java.io.IOException,
                                                     java.lang.ClassNotFoundException

Create object copy using serialization mechanism.

Throws:

java.io.IOException

java.lang.ClassNotFoundException

writeObject

public static void writeObject(java.lang.String dest,
               java.lang.Object object)
                        throws java.io.IOException

Throws:

java.io.IOException

See Also:

writeObject(java.io.File, Object)

writeObject

public static void writeObject(java.io.File dest,
               java.lang.Object object)
                        throws java.io.IOException

Writes serializable object to a file. Existing file will be overwritten.

Throws:

java.io.IOException

readObject

public static java.lang.Object readObject(java.lang.String source)
                                   throws java.io.IOException,
                                          java.lang.ClassNotFoundException

Throws:

java.io.IOException

java.lang.ClassNotFoundException

See Also:

readObject(java.io.File)

readObject

public static java.lang.Object readObject(java.io.File source)
                                   throws java.io.IOException,
                                          java.lang.ClassNotFoundException

Reads serialized object from the file.

Throws:

java.io.IOException

java.lang.ClassNotFoundException

objectToByteArray

public static byte[] objectToByteArray(java.lang.Object obj)
                                throws java.io.IOException

Serialize an object to byte array.

Throws:

java.io.IOException

byteArrayToObject

public static java.lang.Object byteArrayToObject(byte[] data)
                                          throws java.io.IOException,
                                                 java.lang.ClassNotFoundException

De-serialize an object from byte array.

Throws:

java.io.IOException

java.lang.ClassNotFoundException

length

public static int length(java.lang.Object obj)

Returns length of the object.

containsElement

public static boolean containsElement(java.lang.Object obj,
                      java.lang.Object element)

Returns true if first argument contains provided element. It works for strings, collections, maps and arrays. s