Package cn.sliew.milky.common.util

Class ObjectUtil

java.lang.Object

cn.sliew.milky.common.util.ObjectUtil

public class ObjectUtil
extends Object

Method Summary

Modifier and Type	Method	Description
static boolean	nullSafeEquals(Object o1, Object o2)	Determine if the given objects are equal, returning true if both are null or false if only one is null.
static int	nullSafeHashCode(boolean[] array)	Return a hash code based on the contents of the specified array.
static int	nullSafeHashCode(byte[] array)	Return a hash code based on the contents of the specified array.
static int	nullSafeHashCode(char[] array)	Return a hash code based on the contents of the specified array.
static int	nullSafeHashCode(double[] array)	Return a hash code based on the contents of the specified array.
static int	nullSafeHashCode(float[] array)	Return a hash code based on the contents of the specified array.
static int	nullSafeHashCode(int[] array)	Return a hash code based on the contents of the specified array.
static int	nullSafeHashCode(long[] array)	Return a hash code based on the contents of the specified array.
static int	nullSafeHashCode(short[] array)	Return a hash code based on the contents of the specified array.
static int	nullSafeHashCode(Object obj)	Return as hash code for the given object; typically the value of Object#hashCode()}.
static int	nullSafeHashCode(Object[] array)	Return a hash code based on the contents of the specified array.

Methods inherited from class java.lang.Object

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

Method Detail

nullSafeEquals

public static boolean nullSafeEquals(Object o1,
                                     Object o2)

Determine if the given objects are equal, returning true if both are null or false if only one is null.

Compares arrays with Arrays.equals, performing an equality check based on the array elements rather than the array reference.

Parameters:

o1 - first Object to compare

o2 - second Object to compare

Returns:

whether the given objects are equal

See Also:

Object.equals(Object), Arrays.equals(long[], long[])

nullSafeHashCode

public static int nullSafeHashCode(Object obj)

Return as hash code for the given object; typically the value of Object#hashCode()}. If the object is an array, this method will delegate to any of the nullSafeHashCode methods for arrays in this class. If the object is null, this method returns 0.

See Also:

Object.hashCode(), nullSafeHashCode(Object[]), nullSafeHashCode(boolean[]), nullSafeHashCode(byte[]), nullSafeHashCode(char[]), nullSafeHashCode(double[]), nullSafeHashCode(float[]), nullSafeHashCode(int[]), nullSafeHashCode(long[]), nullSafeHashCode(short[])

nullSafeHashCode

public static int nullSafeHashCode(Object[] array)

Return a hash code based on the contents of the specified array. If array is null, this method returns 0.

nullSafeHashCode

public static int nullSafeHashCode(boolean[] array)

Return a hash code based on the contents of the specified array. If array is null, this method returns 0.

nullSafeHashCode

public static int nullSafeHashCode(byte[] array)

Return a hash code based on the contents of the specified array. If array is null, this method returns 0.

nullSafeHashCode

public static int nullSafeHashCode(char[] array)

Return a hash code based on the contents of the specified array. If array is null, this method returns 0.

nullSafeHashCode

public static int nullSafeHashCode(double[] array)

Return a hash code based on the contents of the specified array. If array is null, this method returns 0.

nullSafeHashCode

public static int nullSafeHashCode(float[] array)

Return a hash code based on the contents of the specified array. If array is null, this method returns 0.

nullSafeHashCode

public static int nullSafeHashCode(int[] array)

Return a hash code based on the contents of the specified array. If array is null, this method returns 0.

nullSafeHashCode

public static int nullSafeHashCode(long[] array)

Return a hash code based on the contents of the specified array. If array is null, this method returns 0.

nullSafeHashCode

public static int nullSafeHashCode(short[] array)

Return a hash code based on the contents of the specified array. If array is null, this method returns 0.