Package com.landawn.abacus.util

Class ObjIterator<T>

java.lang.Object

com.landawn.abacus.util.ObjIterator<T>

Type Parameters:

T -

All Implemented Interfaces:

Immutable, Iterator<T>

Direct Known Subclasses:

LineIterator, ObjIteratorEx

public abstract class ObjIterator<T>
extends Object

Since:

0.9

Author:

Haiyang Li

Constructor Summary

Constructors

Constructor	Description
ObjIterator()

Method Summary

Modifier and Type	Method	Description
static <T> ObjIterator<T>	defer(Supplier<? extends Iterator<? extends T>> iteratorSupplier)	Lazy evaluation.
static <T> ObjIterator<T>	empty()
ObjIterator<T>	filter(Predicate<? super T> filter)
<E extends Exception> void	foreachIndexed(Throwables.IndexedConsumer<? super T,E> action)
<E extends Exception> void	foreachRemaining(Throwables.Consumer<? super T,E> action)
static <T> ObjIterator<T>	from(Supplier<T[]> arraySupplier)	Lazy evaluation.
static <T> ObjIterator<T>	generate(BooleanSupplier hasNext, Supplier<? extends T> supplier)
static <T> ObjIterator<T>	generate(Supplier<? extends T> supplier)	Returns an infinite ObjIterator.
ObjIterator<Indexed<T>>	indexed()
ObjIterator<Indexed<T>>	indexed(long startIndex)
static <T> ObjIterator<T>	just(T val)
<U> ObjIterator<U>	map(Function<? super T,U> mapper)
static <T> ObjIterator<T>	of(Iterable<? extends T> iterable)
static <T> ObjIterator<T>	of(Collection<? extends T> iterable)
static <T> ObjIterator<T>	of(Iterator<? extends T> iter)
static <T> ObjIterator<T>	of(T... a)
static <T> ObjIterator<T>	of(T[] a, int fromIndex, int toIndex)
void	remove()	Deprecated. - UnsupportedOperationException
Stream<T>	stream()
Object[]	toArray()
<A> A[]	toArray(A[] a)
<C extends Collection<T>> C	toCollection(Supplier<? extends C> supplier)
ImmutableList<T>	toImmutableList()
ImmutableSet<T>	toImmutableSet()
List<T>	toList()
Set<T>	toSet()

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.Iterator

forEachRemaining, hasNext, next

Constructor Details

ObjIterator

public ObjIterator()

Method Details

empty

public static <T> ObjIterator<T> empty()

Type Parameters:

T -

Returns:

just

public static <T> ObjIterator<T> just(T val)

Type Parameters:

T -

Parameters:

val -

Returns:

of

@SafeVarargs
public static <T> ObjIterator<T> of(T... a)

Type Parameters:

T -

Parameters:

a -

Returns:

of

public static <T> ObjIterator<T> of(T[] a,
 int fromIndex,
 int toIndex)

Type Parameters:

T -

Parameters:

a -

fromIndex -

toIndex -

Returns:

of

public static <T> ObjIterator<T> of(Iterator<? extends T> iter)

Type Parameters:

T -

Parameters:

iter -

Returns:

of

public static <T> ObjIterator<T> of(Collection<? extends T> iterable)

Type Parameters:

T -

Parameters:

iterable -

Returns:

of

public static <T> ObjIterator<T> of(Iterable<? extends T> iterable)

Type Parameters:

T -

Parameters:

iterable -

Returns:

from

public static <T> ObjIterator<T> from(Supplier<T[]> arraySupplier)

Lazy evaluation.

Type Parameters:

T -

Parameters:

arraySupplier -

Returns:

defer

public static <T> ObjIterator<T> defer(Supplier<? extends Iterator<? extends T>> iteratorSupplier)

Lazy evaluation.

Type Parameters:

T -

Parameters:

iteratorSupplier -

Returns:

generate

public static <T> ObjIterator<T> generate(Supplier<? extends T> supplier)

Returns an infinite ObjIterator.

Type Parameters:

T -

Parameters:

supplier -

Returns:

generate

public static <T> ObjIterator<T> generate(BooleanSupplier hasNext,
 Supplier<? extends T> supplier)

Type Parameters:

T -

Parameters:

hasNext -

supplier -

Returns:

toArray

public Object[] toArray()

toArray

public <A> A[] toArray(A[] a)

toList

public List<T> toList()

filter

@Beta
public ObjIterator<T> filter(Predicate<? super T> filter)

map

@Beta
public <U> ObjIterator<U> map(Function<? super T,U> mapper)

stream

public Stream<T> stream()

indexed

@Beta
public ObjIterator<Indexed<T>> indexed()

indexed

@Beta
public ObjIterator<Indexed<T>> indexed(long startIndex)

foreachRemaining

public <E extends Exception> void foreachRemaining(Throwables.Consumer<? super T,E> action)
                                            throws E

Type Parameters:

E -

Parameters:

action -

Throws:

E - the e

foreachIndexed

public <E extends Exception> void foreachIndexed(Throwables.IndexedConsumer<? super T,E> action)
                                          throws E

Type Parameters:

E -

Parameters:

action -

Throws:

E - the e

remove

@Deprecated
public void remove()
            throws UnsupportedOperationException

Deprecated.

- UnsupportedOperationException

Specified by:

remove in interface Iterator<T>

Throws:

UnsupportedOperationException

toSet

public Set<T> toSet()

toCollection

public <C extends Collection<T>> C toCollection(Supplier<? extends C> supplier)

Type Parameters:

C -

Parameters:

supplier -

Returns:

toImmutableList

public ImmutableList<T> toImmutableList()

toImmutableSet

public ImmutableSet<T> toImmutableSet()