hu.akarnokd.rxjava2.internal.functions

Enum Objects

java.lang.Object

java.lang.Enum<Objects>

hu.akarnokd.rxjava2.internal.functions.Objects

All Implemented Interfaces:

java.io.Serializable, java.lang.Comparable<Objects>

public enum Objects
extends java.lang.Enum<Objects>

Utility methods containing the backport of Java 7's Objects utility class.

Named as such to avoid clash with java.util.Objects.

Method Summary

Modifier and Type	Method and Description
static int	compare(int v1, int v2) Compares two integer values similar to Integer.compare.
static int	compare(long v1, long v2) Compares two integer values similar to Long.compare.
static boolean	equals(java.lang.Object o1, java.lang.Object o2) Compares two potentially null objects with each other using Object.equals.
static <T> BiPredicate<T,T>	equalsPredicate() Returns a BiPredicate that compares its parameters via Objects.equals().
static int	hashCode(java.lang.Object o) Returns the hashCode of a non-null object or zero for a null object.
static <T> T	requireNonNull(T object, java.lang.String message) Verifies if the object is not null and returns it or throws a NullPointerException with the given message.
static Objects	valueOf(java.lang.String name) Returns the enum constant of this type with the specified name.
static Objects[]	values() Returns an array containing the constants of this enum type, in the order they are declared.

Methods inherited from class java.lang.Enum

clone, compareTo, equals, finalize, getDeclaringClass, hashCode, name, ordinal, toString, valueOf

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Method Detail

values

public static Objects[] values()

Returns an array containing the constants of this enum type, in the order they are declared. This method may be used to iterate over the constants as follows:

for (Objects c : Objects.values())
    System.out.println(c);

Returns:

an array containing the constants of this enum type, in the order they are declared

valueOf

public static Objects valueOf(java.lang.String name)

Returns the enum constant of this type with the specified name. The string must match exactly an identifier used to declare an enum constant in this type. (Extraneous whitespace characters are not permitted.)

Parameters:

name - the name of the enum constant to be returned.

Returns:

the enum constant with the specified name

Throws:

java.lang.IllegalArgumentException - if this enum type has no constant with the specified name

java.lang.NullPointerException - if the argument is null

requireNonNull

public static final <T> T requireNonNull(T object,
                                         java.lang.String message)

Verifies if the object is not null and returns it or throws a NullPointerException with the given message.

Type Parameters:

T - the value type

Parameters:

object - the object to verify

message - the message to use with the NullPointerException

Returns:

the object itself

Throws:

java.lang.NullPointerException - if object is null

equals

public static boolean equals(java.lang.Object o1,
                             java.lang.Object o2)

Compares two potentially null objects with each other using Object.equals.

Parameters:

o1 - the first object

o2 - the second object

Returns:

the comparison result

hashCode

public static int hashCode(java.lang.Object o)

Returns the hashCode of a non-null object or zero for a null object.

Parameters:

o - the object to get the hashCode for.

Returns:

the hashCode

compare

public static int compare(int v1,
                          int v2)

Compares two integer values similar to Integer.compare.

Parameters:

v1 - the first value

v2 - the second value

Returns:

the comparison result

compare

public static int compare(long v1,
                          long v2)

Compares two integer values similar to Long.compare.

Parameters:

v1 - the first value

v2 - the second value

Returns:

the comparison result

equalsPredicate

public static <T> BiPredicate<T,T> equalsPredicate()

Returns a BiPredicate that compares its parameters via Objects.equals().

Type Parameters:

T - the value type

Returns:

the bipredicate