Package com.landawn.abacus.util

Class u.OptionalChar

java.lang.Object

com.landawn.abacus.util.u.OptionalChar

All Implemented Interfaces:

Immutable, Comparable<u.OptionalChar>

Enclosing class:

u

@Immutable
public static final class u.OptionalChar
extends Object
implements Comparable<u.OptionalChar>, Immutable

The Class OptionalChar.

Method Summary

Modifier and Type	Method	Description
u.Optional<Character>	boxed()
int	compareTo(u.OptionalChar optional)
static u.OptionalChar	empty()
boolean	equals(Object obj)
<E extends Exception> u.OptionalChar	filter(Throwables.CharPredicate<E> predicate)
<E extends Exception> u.OptionalChar	flatMap(Throwables.CharFunction<u.OptionalChar,E> mapper)
char	get()
int	hashCode()
<E extends Exception> u.OptionalChar	ifPresent(Throwables.CharConsumer<E> action)
<E extends Exception, E2 extends Exception> u.OptionalChar	ifPresentOrElse(Throwables.CharConsumer<E> action, Throwables.Runnable<E2> emptyAction)	If present or else.
boolean	isEmpty()
boolean	isPresent()
<E extends Exception> u.OptionalChar	map(Throwables.CharUnaryOperator<E> mapper)
<E extends Exception> u.OptionalInt	mapToInt(Throwables.ToIntFunction<Character,E> mapper)	Map to int.
<T, E extends Exception> u.Optional<T>	mapToNonNull(Throwables.CharFunction<T,E> mapper)
<T, E extends Exception> u.Nullable<T>	mapToObj(Throwables.CharFunction<T,E> mapper)	Map to obj.
static u.OptionalChar	of(char value)
static u.OptionalChar	ofNullable(Character val)
<E extends Exception> u.OptionalChar	or(Throwables.Supplier<u.OptionalChar,E> supplier)
char	orElse(char other)
<E extends Exception> char	orElseGet(Throwables.CharSupplier<E> other)	Or else get.
char	orElseThrow()	Or else throw.
<X extends Throwable> char	orElseThrow(Supplier<? extends X> exceptionSupplier)	Or else throw.
char	orElseZero()
char	orZero()	Deprecated. use orElseZero()
CharStream	stream()
ImmutableList<Character>	toImmutableList()	To immutable list.
ImmutableSet<Character>	toImmutableSet()	To immutable set.
List<Character>	toList()
Set<Character>	toSet()
String	toString()

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Method Details

empty

public static u.OptionalChar empty()

Returns:

of

public static u.OptionalChar of(char value)

Parameters:

value -

Returns:

ofNullable

public static u.OptionalChar ofNullable(Character val)

Parameters:

val -

Returns:

get

public char 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.OptionalChar ifPresent(Throwables.CharConsumer<E> action)
                                               throws E

Type Parameters:

E -

Parameters:

action -

Returns:

Throws:

E - the e

ifPresentOrElse

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

If present or else.

Type Parameters:

E -

E2 -

Parameters:

action -

emptyAction -

Returns:

Throws:

E - the e

E2 - the e2

filter

public <E extends Exception> u.OptionalChar filter(Throwables.CharPredicate<E> predicate)
                                            throws E

Type Parameters:

E -

Parameters:

predicate -

Returns:

Throws:

E - the e

map

public <E extends Exception> u.OptionalChar map(Throwables.CharUnaryOperator<E> mapper)
                                         throws E

Type Parameters:

E -

Parameters:

mapper -

Returns:

Throws:

E - the e

mapToInt

public <E extends Exception> u.OptionalInt mapToInt(Throwables.ToIntFunction<Character,E> mapper)
                                             throws E

Map to int.

Type Parameters:

E -

Parameters:

mapper -

Returns:

Throws:

E - the e

mapToObj

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

Map to obj.

Type Parameters:

T -

E -

Parameters:

mapper -

Returns:

Throws:

E - the e

mapToNonNull

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

Throws:

E extends Exception

flatMap

public <E extends Exception> u.OptionalChar flatMap(Throwables.CharFunction<u.OptionalChar,E> mapper)
                                             throws E

Type Parameters:

E -

Parameters:

mapper -

Returns:

Throws:

E - the e

or

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

Type Parameters:

E -

Parameters:

supplier -

Returns:

Throws:

E - the e

orZero

@Deprecated
public char orZero()

Deprecated.

use orElseZero()

Returns:

orElseZero

public char orElseZero()

orElse

public char orElse(char other)

Parameters:

other -

Returns:

orElseGet

public <E extends Exception> char orElseGet(Throwables.CharSupplier<E> other)
                                     throws E

Or else get.

Type Parameters:

E -

Parameters:

other -

Returns:

Throws:

E - the e

orElseThrow

public char orElseThrow()
                 throws NoSuchElementException

Or else throw.

Returns:

Throws:

NoSuchElementException - the no such element exception

orElseThrow

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

Or else throw.

Type Parameters:

X -

Parameters:

exceptionSupplier -

Returns:

Throws:

X - the x

stream

public CharStream stream()

Returns:

toList

public List<Character> toList()

Returns:

toSet

public Set<Character> toSet()

Returns:

toImmutableList

public ImmutableList<Character> toImmutableList()

To immutable list.

Returns:

toImmutableSet

public ImmutableSet<Character> toImmutableSet()

To immutable set.

Returns:

boxed

public u.Optional<Character> boxed()

Returns:

compareTo

public int compareTo(u.OptionalChar optional)

Specified by:

compareTo in interface Comparable<u.OptionalChar>

Parameters:

optional -

Returns:

equals

public boolean equals(Object obj)

Overrides:

equals in class Object

Parameters:

obj -

Returns:

hashCode

public int hashCode()

Overrides:

hashCode in class Object

Returns:

toString

public String toString()

Overrides:

toString in class Object

Returns: