net.pwall.util

Class MiniSet1<T>

java.lang.Object

net.pwall.util.MiniSet<T>

net.pwall.util.MiniSet1<T>

Type Parameters:

T - the value type

All Implemented Interfaces:

Iterable<T>, Collection<T>, Set<T>

public class MiniSet1<T>
extends MiniSet<T>

An implementation of MiniSet containing a single value.

Author:

Peter Wall

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
class	MiniSet1.Miniterator An Iterator over a set with a single value.

Constructor Summary

Constructors

Constructor and Description
MiniSet1(Set<T> set) Construct a MiniSet1 from another Set (helps with deserializing).
MiniSet1(T value) Construct a MiniSet1 with the given value.

Method Summary

Modifier and Type	Method and Description
boolean	contains(Object o) Test whether the collection contains an object equal to the specified value.
boolean	equals(Object other) Compares the specified object with this set for equality.
int	hashCode() Returns the hash code value for this set.
boolean	isEmpty() Return false to indicate that the set is not empty.
Iterator<T>	iterator() Return an Iterator over the set.
int	size() Get the number of values (always one).
Object[]	toArray() Copy the set to an array.
<TT> TT[]	toArray(TT[] a) Copy the set to an array, either the supplied array (if it fits) or a new array of the specified type.
String	toString() Returns a string representation of this set.

Methods inherited from class net.pwall.util.MiniSet

add, addAll, clear, containsAll, of, of, of, of, of, of, of, remove, removeAll, retainAll, stringOf

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface java.util.Set

spliterator

Methods inherited from interface java.util.Collection

parallelStream, removeIf, stream

Methods inherited from interface java.lang.Iterable

forEach

Constructor Detail

MiniSet1

public MiniSet1(T value)

Construct a MiniSet1 with the given value.

Parameters:

value - the value

MiniSet1

public MiniSet1(Set<T> set)

Construct a MiniSet1 from another Set (helps with deserializing).

Parameters:

set - the other Set

Throws:

IllegalArgumentException - if the size of the other set is not 1

Method Detail

size

public int size()

Get the number of values (always one).

Returns:

the number of values

isEmpty

public boolean isEmpty()

Return false to indicate that the set is not empty.

Returns:

false

contains

public boolean contains(Object o)

Test whether the collection contains an object equal to the specified value.

Parameters:

o - the object

Returns:

true if the single value is equal to the object

iterator

public Iterator<T> iterator()

Return an Iterator over the set.

Returns:

the Iterator

toArray

public Object[] toArray()

Copy the set to an array.

Returns:

an array containing the value

toArray

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

Copy the set to an array, either the supplied array (if it fits) or a new array of the specified type.

Type Parameters:

TT - the type of the destination array items

Parameters:

a - the destination array

Returns:

a copy of the set, in a new array if necessary

Throws:

ArrayStoreException - if the values in the collection can't be stored in the destination array

equals

public boolean equals(Object other)

Compares the specified object with this set for equality. Returns true if the specified object is also a set containing a single value identical to that of this set.

Specified by:

equals in interface Collection<T>

Specified by:

equals in interface Set<T>

Overrides:

equals in class MiniSet<T>

Parameters:

other - object to be compared for equality with this set

Returns:

true if the specified object is equal to this set

hashCode

public int hashCode()

Returns the hash code value for this set. The hash code of a set with a single value is defined to be the hash code of the value.

Specified by:

hashCode in interface Collection<T>

Specified by:

hashCode in interface Set<T>

Overrides:

hashCode in class MiniSet<T>

Returns:

the hash code value for this set

toString

public String toString()

Returns a string representation of this set.

Overrides:

toString in class MiniSet<T>

Returns:

a string representation of this set