Class ImmutableSortedSet.Builder<E>

java.lang.Object

com.google.common.collect.ImmutableCollection.Builder<E>

com.google.common.collect.ImmutableSet.Builder<E>

com.google.common.collect.ImmutableSortedSet.Builder<E>

Enclosing class:

ImmutableSortedSet<E>

public static final class ImmutableSortedSet.Builder<E>
extends ImmutableSet.Builder<E>

A builder for creating immutable sorted set instances, especially public static final sets ("constant sets"), with a given comparator. Example:

public static final ImmutableSortedSet<Number> LUCKY_NUMBERS =
    new ImmutableSortedSet.Builder<Number>(ODDS_FIRST_COMPARATOR)
        .addAll(SINGLE_DIGIT_PRIMES)
        .add(42)
        .build();

Builder instances can be reused; it is safe to call build() multiple times to build multiple sets in series. Each set is a superset of the set created before it.

Since:

2.0

Author:

Jared Levy, Louis Wasserman

Constructor Summary

Constructors

Constructor	Description
Builder(Comparator<? super E> comparator)	Creates a new builder.

Method Summary

Modifier and Type	Method	Description
ImmutableSortedSet.Builder<E>	add(E element)	Adds element to the ImmutableSortedSet.
ImmutableSortedSet.Builder<E>	add(E... elements)	Adds each element of elements to the ImmutableSortedSet, ignoring duplicate elements (only the first duplicate element is added).
ImmutableSortedSet.Builder<E>	addAll(Iterable<? extends E> elements)	Adds each element of elements to the ImmutableSortedSet, ignoring duplicate elements (only the first duplicate element is added).
ImmutableSortedSet.Builder<E>	addAll(Iterator<? extends E> elements)	Adds each element of elements to the ImmutableSortedSet, ignoring duplicate elements (only the first duplicate element is added).
ImmutableSortedSet<E>	build()	Returns a newly-created ImmutableSortedSet based on the contents of the Builder and its comparator.

Methods inherited from class java.lang.Object

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

Constructor Details

Builder

public Builder(Comparator<? super E> comparator)

Creates a new builder. The returned builder is equivalent to the builder generated by ImmutableSortedSet.orderedBy(java.util.Comparator<E>).

Method Details

add

@CanIgnoreReturnValue
public ImmutableSortedSet.Builder<E> add(E element)

Adds element to the ImmutableSortedSet. If the ImmutableSortedSet already contains element, then add has no effect. (only the previously added element is retained).

Overrides:

add in class ImmutableSet.Builder<E>

Parameters:

element - the element to add

Returns:

this Builder object

Throws:

NullPointerException - if element is null

add

@CanIgnoreReturnValue
public ImmutableSortedSet.Builder<E> add(E... elements)

Adds each element of elements to the ImmutableSortedSet, ignoring duplicate elements (only the first duplicate element is added).

Overrides:

add in class ImmutableSet.Builder<E>

Parameters:

elements - the elements to add

Returns:

this Builder object

Throws:

NullPointerException - if elements contains a null element

addAll

@CanIgnoreReturnValue
public ImmutableSortedSet.Builder<E> addAll(Iterable<? extends E> elements)

Adds each element of elements to the ImmutableSortedSet, ignoring duplicate elements (only the first duplicate element is added).

Overrides:

addAll in class ImmutableSet.Builder<E>

Parameters:

elements - the elements to add to the ImmutableSortedSet

Returns:

this Builder object

Throws:

NullPointerException - if elements contains a null element

addAll

@CanIgnoreReturnValue
public ImmutableSortedSet.Builder<E> addAll(Iterator<? extends E> elements)

Adds each element of elements to the ImmutableSortedSet, ignoring duplicate elements (only the first duplicate element is added).

Overrides:

addAll in class ImmutableSet.Builder<E>

Parameters:

elements - the elements to add to the ImmutableSortedSet

Returns:

this Builder object

Throws:

NullPointerException - if elements contains a null element

build

public ImmutableSortedSet<E> build()

Returns a newly-created ImmutableSortedSet based on the contents of the Builder and its comparator.

Overrides:

build in class ImmutableSet.Builder<E>