org.assertj.core.util

Class Objects

java.lang.Object

org.assertj.core.util.Objects

public final class Objects
extends Object

Utility methods related to objects.

Author:

Alex Ruiz, Joel Costigliola

Field Summary

Fields

Modifier and Type	Field and Description
static int	HASH_CODE_PRIME Prime number used to calculate the hash code of objects.

Method Summary

Modifier and Type	Method and Description
static boolean	areEqual(Object o1, Object o2) Deprecated. Use Objects.deepEquals(Object, Object) instead.
static boolean	areEqualArrays(Object o1, Object o2) Deprecated. Use either Objects.deepEquals(Object, Object) or Arrays.deepEquals(Object[], Object[]).
static <T> T	castIfBelongsToType(Object o, Class<T> type) Casts the given object to the given type only if the object is of the given type.
static int	hashCodeFor(Object o) Returns the hash code for the given object.
static String[]	namesOf(Class<?>... types) Returns an array containing the names of the given types.

Methods inherited from class java.lang.Object

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

Field Detail

HASH_CODE_PRIME

public static final int HASH_CODE_PRIME

Prime number used to calculate the hash code of objects.

See Also:

Constant Field Values

Method Detail

areEqual

@Deprecated
public static boolean areEqual(Object o1,
                                           Object o2)

Deprecated. Use Objects.deepEquals(Object, Object) instead.

Returns true if the arguments are deeply equal to each other, false otherwise.

Two null values are deeply equal. If both arguments are arrays, the algorithm in Arrays.deepEquals(java.lang.Object[], java.lang.Object[]) is used to determine equality. Otherwise, equality is determined by using the Object.equals(java.lang.Object) method of the first argument.

Parameters:

o1 - an object.

o2 - an object to be compared with o1 for deep equality.

Returns:

true if the arguments are deeply equal to each other, false otherwise.

areEqualArrays

@Deprecated
public static boolean areEqualArrays(Object o1,
                                                 Object o2)

Deprecated. Use either Objects.deepEquals(Object, Object) or Arrays.deepEquals(Object[], Object[]).

Returns true if the arguments are arrays and deeply equal to each other, false otherwise.

Once verified that the arguments are arrays, the algorithm in Arrays.deepEquals(java.lang.Object[], java.lang.Object[]) is used to determine equality.

Parameters:

o1 - an object.

o2 - an object to be compared with o1 for deep equality.

Returns:

true if the arguments are arrays and deeply equal to each other, false otherwise.

namesOf

public static String[] namesOf(Class<?>... types)

Returns an array containing the names of the given types.

Parameters:

types - the given types.

Returns:

the names of the given types stored in an array.

hashCodeFor

public static int hashCodeFor(Object o)

Returns the hash code for the given object. If the object is null, this method returns zero. Otherwise calls the method hashCode of the given object.

Parameters:

o - the given object.

Returns:

the hash code for the given object

castIfBelongsToType

public static <T> T castIfBelongsToType(Object o,
                                        Class<T> type)

Casts the given object to the given type only if the object is of the given type. If the object is not of the given type, this method returns null.

Type Parameters:

T - the generic type to cast the given object to.

Parameters:

o - the object to cast.

type - the given type.

Returns:

the casted object, or null if the given object is not to the given type.