com.landawn.abacus.util

Class u.OptionalInt

java.lang.Object

com.landawn.abacus.util.u.OptionalInt

All Implemented Interfaces:

Comparable<u.OptionalInt>

Enclosing class:

u

public static final class u.OptionalInt
extends Object
implements Comparable<u.OptionalInt>

The Class OptionalInt.

Method Summary

Modifier and Type	Method and Description
OptionalInt	__()
u.Optional<Integer>	boxed()
int	compareTo(u.OptionalInt optional)
static u.OptionalInt	empty()
boolean	equals(Object obj)
<E extends Exception> u.OptionalInt	filter(Throwables.IntPredicate<E> predicate)
<E extends Exception> u.OptionalInt	flatMap(Throwables.IntFunction<u.OptionalInt,E> mapper)
static u.OptionalInt	from(OptionalInt op)
int	get()
int	hashCode()
<E extends Exception> u.OptionalInt	ifPresent(Throwables.IntConsumer<E> action)
<E extends Exception,E2 extends Exception> u.OptionalInt	ifPresentOrElse(Throwables.IntConsumer<E> action, Throwables.Runnable<E2> emptyAction) If present or else.
boolean	isEmpty()
boolean	isPresent()
<E extends Exception> u.OptionalInt	map(Throwables.IntUnaryOperator<E> mapper)
<E extends Exception> u.OptionalDouble	mapToDouble(Throwables.ToDoubleFunction<Integer,E> mapper) Map to double.
<E extends Exception> u.OptionalLong	mapToLong(Throwables.ToLongFunction<Integer,E> mapper) Map to long.
<T,E extends Exception> u.Optional<T>	mapToNonNull(Throwables.IntFunction<T,E> mapper)
<T,E extends Exception> u.Nullable<T>	mapToObj(Throwables.IntFunction<T,E> mapper) Map to obj.
static u.OptionalInt	of(int value)
static u.OptionalInt	ofNullable(Integer val)
<E extends Exception> u.OptionalInt	or(Throwables.Supplier<u.OptionalInt,E> supplier)
int	orElse(int other)
<E extends Exception> int	orElseGet(Throwables.IntSupplier<E> other) Or else get.
int	orElseThrow() Or else throw.
<X extends Throwable> int	orElseThrow(Supplier<? extends X> exceptionSupplier) Or else throw.
int	orZero()
IntStream	stream()
ImmutableList<Integer>	toImmutableList() To immutable list.
ImmutableSet<Integer>	toImmutableSet() To immutable set.
List<Integer>	toList()
Set<Integer>	toSet()
String	toString()

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Method Detail

empty

public static u.OptionalInt empty()

Returns:

of

public static u.OptionalInt of(int value)

Parameters:

value -

Returns:

ofNullable

public static u.OptionalInt ofNullable(Integer val)

Parameters:

val -

Returns:

from

public static u.OptionalInt from(OptionalInt op)

Parameters:

op -

Returns:

get

public int get()
        throws NoSuchElementException

Returns:

Throws:

NoSuchElementException - the no such element exception

isPresent

public boolean isPresent()

isEmpty

public boolean isEmpty()

ifPresent

public <E extends Exception> u.OptionalInt ifPresent(Throwables.IntConsumer<E> action)
                                              throws E extends Exception

Type Parameters:

E -

Parameters:

action -

Returns:

Throws:

E - the e

E extends Exception

ifPresentOrElse

public <E extends Exception,E2 extends Exception> u.OptionalInt ifPresentOrElse(Throwables.IntConsumer<E> action,
                                                                                Throwables.Runnable<E2> emptyAction)
                                                                         throws E extends Exception,
                                                                                E2 extends Exception

If present or else.

Type Parameters:

E -

E2 -

Parameters:

action -

emptyAction -

Returns:

Throws:

E - the e

E2 - the e2

E extends Exception

filter

public <E extends Exception> u.OptionalInt filter(Throwables.IntPredicate<E> predicate)
                                           throws E extends Exception

Type Parameters:

E -

Parameters:

predicate -

Returns:

Throws:

E - the e

E extends Exception

map

public <E extends Exception> u.OptionalInt map(Throwables.IntUnaryOperator<E> mapper)
                                        throws E extends Exception

Type Parameters:

E -

Parameters:

mapper -

Returns:

Throws:

E - the e

E extends Exception

mapToLong

public <E extends Exception> u.OptionalLong mapToLong(Throwables.ToLongFunction<Integer,E> mapper)
                                               throws E extends Exception

Map to long.

Type Parameters:

E -

Parameters:

mapper -

Returns:

Throws:

E - the e

E extends Exception

mapToDouble

public <E extends Exception> u.OptionalDouble mapToDouble(Throwables.ToDoubleFunction<Integer,E> mapper)
                                                   throws E extends Exception

Map to double.

Type Parameters:

E -

Parameters:

mapper -

Returns:

Throws:

E - the e

E extends Exception

mapToObj

public <T,E extends Exception> u.Nullable<T> mapToObj(Throwables.IntFunction<T,E> mapper)
                                               throws E extends Exception

Map to obj.

Type Parameters:

T -

E -

Parameters:

mapper -

Returns:

Throws:

E - the e

E extends Exception

mapToNonNull

public <T,E extends Exception> u.Optional<T> mapToNonNull(Throwables.IntFunction<T,E> mapper)
                                                   throws E extends Exception

Throws:

E extends Exception

flatMap

public <E extends Exception> u.OptionalInt flatMap(Throwables.IntFunction<u.OptionalInt,E> mapper)
                                            throws E extends Exception

Type Parameters:

E -

Parameters:

mapper -

Returns:

Throws:

E - the e

E extends Exception

or

public <E extends Exception> u.OptionalInt or(Throwables.Supplier<u.OptionalInt,E> supplier)
                                       throws E extends Exception

Type Parameters:

E -

Parameters:

supplier -

Returns:

Throws:

E - the e

E extends Exception

orZero

public int orZero()

Returns:

orElseThrow

public int orElseThrow()
                throws NoSuchElementException

Or else throw.

Returns:

Throws:

NoSuchElementException - the no such element exception

orElse

public int orElse(int other)

Parameters:

other -

Returns:

orElseGet

public <E extends Exception> int orElseGet(Throwables.IntSupplier<E> other)
                                    throws E extends Exception

Or else get.

Type Parameters:

E -

Parameters:

other -

Returns:

Throws:

E - the e

E extends Exception

orElseThrow

public <X extends Throwable> int orElseThrow(Supplier<? extends X> exceptionSupplier)
                                      throws X extends Throwable

Or else throw.

Type Parameters:

X -

Parameters:

exceptionSupplier -

Returns:

Throws:

X - the x

X extends Throwable

stream

public IntStream stream()

Returns:

toList

public List<Integer> toList()

Returns:

toSet

public Set<Integer> toSet()

Returns:

toImmutableList

public ImmutableList<Integer> toImmutableList()

To immutable list.

Returns:

toImmutableSet

public ImmutableSet<Integer> toImmutableSet()

To immutable set.

Returns:

boxed

public u.Optional<Integer> boxed()

Returns:

__

public OptionalInt __()

Returns:

compareTo

public int compareTo(u.OptionalInt optional)

Specified by:

compareTo in interface Comparable<u.OptionalInt>

Parameters:

optional -

Returns:

equals

public boolean equals(Object obj)

Overrides:

equals in class Object

Parameters:

obj -

Returns:

true, if successful

hashCode

public int hashCode()

Overrides:

hashCode in class Object

Returns:

toString

public String toString()

Overrides:

toString in class Object

Returns: