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Oracle® Fusion Middleware Java API Reference for Oracle Coherence 12c (12.1.3.0.0) E47890-01 |
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java.lang.Object
java.util.AbstractCollection
java.util.AbstractSet
com.tangosol.util.NullImplementation.NullSet
public static class NullImplementation.NullSet
An immutable set which contains nothing.
Field Summary | |
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static java.util.Set |
INSTANCE Since the set contains no information, only one ever has to exist. |
Constructor Summary | |
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NullImplementation.NullSet() Default constructor (for ExternalizableLite and PortableObject). |
Method Summary | |
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boolean |
add(java.lang.Object o) Ensures that this Collection contains the specified element. |
void |
clear() Removes all of the elements from this Collection. |
boolean |
contains(java.lang.Object o) Returns true if this Collection contains the specified element. |
boolean |
equals(java.lang.Object o) |
int |
hashCode() |
java.util.Iterator |
iterator() Returns an Iterator over the elements contained in this Collection. |
void |
readExternal(java.io.DataInput in) Restore the contents of this object by loading the object's state from the passed DataInput object. |
void |
readExternal(PofReader in) Restore the contents of a user type instance by reading its state using the specified PofReader object. |
boolean |
remove(java.lang.Object o) Removes a single instance of the specified element from this Collection, if it is present (optional operation). |
int |
size() Returns the number of elements in this Collection. |
java.lang.Object[] |
toArray() Returns an array containing all of the elements in this Set. |
void |
writeExternal(java.io.DataOutput out) Save the contents of this object by storing the object's state into the passed DataOutput object. |
void |
writeExternal(PofWriter out) Save the contents of a POF user type instance by writing its state using the specified PofWriter object. |
Methods inherited from class java.util.AbstractSet |
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removeAll |
Methods inherited from class java.util.AbstractCollection |
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addAll, containsAll, isEmpty, retainAll, toArray, toString |
Methods inherited from interface java.util.Set |
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addAll, containsAll, isEmpty, retainAll, toArray |
Field Detail |
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public static final java.util.Set INSTANCE
Constructor Detail |
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public NullImplementation.NullSet()
Method Detail |
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public java.lang.Object[] toArray()
toArray
in interface java.util.Collection
toArray
in interface java.util.Set
toArray
in class java.util.AbstractCollection
public java.util.Iterator iterator()
iterator
in interface java.lang.Iterable
iterator
in interface java.util.Collection
iterator
in interface java.util.Set
iterator
in class java.util.AbstractCollection
public int size()
size
in interface java.util.Collection
size
in interface java.util.Set
size
in class java.util.AbstractCollection
public boolean contains(java.lang.Object o)
e
such that (o==null ? e==null : o.equals(e))
.contains
in interface java.util.Collection
contains
in interface java.util.Set
contains
in class java.util.AbstractCollection
o
- the object to search for in the setpublic boolean add(java.lang.Object o)
add
in interface java.util.Collection
add
in interface java.util.Set
add
in class java.util.AbstractCollection
o
- element whose presence in this Collection is to be ensuredpublic boolean remove(java.lang.Object o)
e
such that (o==null ? e==null : o.equals(e))
, if the Collection contains one or more such elements. Returns true if the Collection contained the specified element (or equivalently, if the Collection changed as a result of the call).remove
in interface java.util.Collection
remove
in interface java.util.Set
remove
in class java.util.AbstractCollection
o
- element to be removed from this Collection, if presentpublic void clear()
clear
in interface java.util.Collection
clear
in interface java.util.Set
clear
in class java.util.AbstractCollection
public boolean equals(java.lang.Object o)
equals
in interface java.util.Collection
equals
in interface java.util.Set
equals
in class java.util.AbstractSet
public int hashCode()
hashCode
in interface java.util.Collection
hashCode
in interface java.util.Set
hashCode
in class java.util.AbstractSet
public void readExternal(java.io.DataInput in) throws java.io.IOException
readExternal
in interface ExternalizableLite
in
- the DataInput stream to read data from in order to restore the state of this objectjava.io.IOException
- if an I/O exception occursjava.io.NotActiveException
- if the object is not in its initial state, and therefore cannot be deserialized intopublic void writeExternal(java.io.DataOutput out) throws java.io.IOException
writeExternal
in interface ExternalizableLite
out
- the DataOutput stream to write the state of this object tojava.io.IOException
- if an I/O exception occurspublic void readExternal(PofReader in) throws java.io.IOException
readExternal
in interface PortableObject
in
- the PofReader from which to read the object's statejava.io.IOException
- if an I/O error occurspublic void writeExternal(PofWriter out) throws java.io.IOException
writeExternal
in interface PortableObject
out
- the PofWriter to which to write the object's statejava.io.IOException
- if an I/O error occurs
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Oracle® Fusion Middleware Java API Reference for Oracle Coherence 12c (12.1.3.0.0) E47890-01 |
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