Package com.uwyn.jhighlight.pcj
Class AbstractCharCollection
- java.lang.Object
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- com.uwyn.jhighlight.pcj.AbstractCharCollection
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- All Implemented Interfaces:
CharCollection
- Direct Known Subclasses:
AbstractCharSet
public abstract class AbstractCharCollection extends java.lang.Object implements CharCollection
This class represents an abstract base for implementing collections of char values. All operations that can be implemented using iterators are implemented as such. In most cases, this is hardly an efficient solution, and at least some of those methods should be overridden by sub-classes.In this implementation, size() is calculated by iterating over the collection. Make sure that size() is overwritten or that iterators do not depend on the size() method.
- Since:
- 1.0
- Version:
- 1.3 21-08-2003 20:16
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Constructor Summary
Constructors Modifier Constructor Description protected
AbstractCharCollection()
Default constructor to be invoked by sub-classes.
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description boolean
add(char v)
Throws UnsupportedOperationException.boolean
addAll(CharCollection c)
Adds all the elements of a specified collection to this collection.void
clear()
Clears this collection.boolean
contains(char v)
Indicates whether this collection contains a specified element.boolean
containsAll(CharCollection c)
Indicates whether all elements of a specified collection is contained in this collection.boolean
isEmpty()
Indicates whether this collection is empty.boolean
remove(char v)
Removes a specified element from this collection.boolean
removeAll(CharCollection c)
Removes all the elements of a specified collection from this collection.boolean
retainAll(CharCollection c)
Retains only the elements of a specified collection in this collection.int
size()
Returns the number of elements in this collection.char[]
toArray()
Returns the elements of this collection as an array.char[]
toArray(char[] a)
Returns the elements of this collection as an array.java.lang.String
toString()
Returns a string representation of this collection.void
trimToSize()
Does nothing.-
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait
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Methods inherited from interface com.uwyn.jhighlight.pcj.CharCollection
equals, hashCode, iterator
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Method Detail
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add
public boolean add(char v)
Throws UnsupportedOperationException.- Specified by:
add
in interfaceCharCollection
- Parameters:
v
- the element to add to this collection.- Returns:
- true if this collection was modified as a result of adding v; returns false otherwise.
- Throws:
java.lang.UnsupportedOperationException
- unconditionally.- See Also:
CharCollection.addAll(CharCollection)
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addAll
public boolean addAll(CharCollection c)
Description copied from interface:CharCollection
Adds all the elements of a specified collection to this collection.- Specified by:
addAll
in interfaceCharCollection
- Parameters:
c
- the collection whose elements to add to this collection.- Returns:
- true if this collection was modified as a result of adding the elements of c; returns false otherwise.
- See Also:
CharCollection.add(char)
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clear
public void clear()
Description copied from interface:CharCollection
Clears this collection.- Specified by:
clear
in interfaceCharCollection
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contains
public boolean contains(char v)
Description copied from interface:CharCollection
Indicates whether this collection contains a specified element.- Specified by:
contains
in interfaceCharCollection
- Parameters:
v
- the element to test for containment.- Returns:
- true if v is contained in this collection; returns false otherwise.
- See Also:
CharCollection.containsAll(CharCollection)
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containsAll
public boolean containsAll(CharCollection c)
Description copied from interface:CharCollection
Indicates whether all elements of a specified collection is contained in this collection.- Specified by:
containsAll
in interfaceCharCollection
- Parameters:
c
- the collection whose elements to test for containment.- Returns:
- true if all the elements of c are contained in this collection; returns false otherwise.
- See Also:
CharCollection.contains(char)
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isEmpty
public boolean isEmpty()
Description copied from interface:CharCollection
Indicates whether this collection is empty.- Specified by:
isEmpty
in interfaceCharCollection
- Returns:
- true if this collection is empty; returns false otherwise.
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remove
public boolean remove(char v)
Description copied from interface:CharCollection
Removes a specified element from this collection.- Specified by:
remove
in interfaceCharCollection
- Parameters:
v
- the char value to remove from this collection.- Returns:
- true if this collection was modified as a result of removing v; returns false otherwise.
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removeAll
public boolean removeAll(CharCollection c)
Description copied from interface:CharCollection
Removes all the elements of a specified collection from this collection.- Specified by:
removeAll
in interfaceCharCollection
- Parameters:
c
- the collection whose elements to remove from this collection.- Returns:
- true if this collection was modified as a result of removing the elements of c; returns false otherwise.
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retainAll
public boolean retainAll(CharCollection c)
Description copied from interface:CharCollection
Retains only the elements of a specified collection in this collection.- Specified by:
retainAll
in interfaceCharCollection
- Parameters:
c
- the collection whose elements to retain in this collection.- Returns:
- true if this collection was modified as a result of removing the elements not contained in c; returns false otherwise.
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size
public int size()
Description copied from interface:CharCollection
Returns the number of elements in this collection.- Specified by:
size
in interfaceCharCollection
- Returns:
- the number of elements in this collection.
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toArray
public char[] toArray()
Description copied from interface:CharCollection
Returns the elements of this collection as an array.- Specified by:
toArray
in interfaceCharCollection
- Returns:
- a new array containing the elements of this collection.
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toArray
public char[] toArray(char[] a)
Description copied from interface:CharCollection
Returns the elements of this collection as an array.- Specified by:
toArray
in interfaceCharCollection
- Parameters:
a
- an array to fill with the elements of this collection; if a is null or not big enough to contain all the elements of this collection, an new array is allocated, and a is not changed.- Returns:
- a, if a has room for all the elements of this collection; otherwise a new array is allocated, filled with the elements of this collection, and returned.
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trimToSize
public void trimToSize()
Does nothing. Sub-classes may provide an implementation to minimize memory usage, but this is not required since many implementations will always have minimal memory usage.- Specified by:
trimToSize
in interfaceCharCollection
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toString
public java.lang.String toString()
Returns a string representation of this collection.- Overrides:
toString
in classjava.lang.Object
- Returns:
- a string representation of this collection.
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