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Java Source Code / Java Documentation » Library » Apache commons primitives 1.0 » org.apache.commons.collections.primitives 
Source Cross Reference  Class Diagram Java Document (Java Doc) 


org.apache.commons.collections.primitives.DoubleCollection

All known Subclasses:   org.apache.commons.collections.primitives.decorators.BaseProxyDoubleCollection,  org.apache.commons.collections.primitives.AbstractDoubleCollection,  org.apache.commons.collections.primitives.adapters.AbstractCollectionDoubleCollection,
DoubleCollection
public interface DoubleCollection (Code)
A collection of double values.
See Also:   org.apache.commons.collections.primitives.adapters.DoubleCollectionCollection
See Also:   org.apache.commons.collections.primitives.adapters.CollectionDoubleCollection
since:
   Commons Primitives 1.0
version:
   $Revision: 1.3 $ $Date: 2003/10/16 20:49:36 $
author:
   Rodney Waldhoff




Method Summary
 booleanadd(double element)
     Ensures that I contain the specified element (optional operation).
 booleanaddAll(DoubleCollection c)
    DoubleCollection.add Adds all of the elements in the specified collection to me (optional operation).
 voidclear()
     Removes all my elements (optional operation).
 booleancontains(double element)
     Returns true iff I contain the specified element.
 booleancontainsAll(DoubleCollection c)
     Returns true iff I DoubleCollection.contains contain all of the elements in the given collection.
 booleanisEmpty()
     Returns true iff I contain no elements.
 DoubleIteratoriterator()
     Returns an DoubleIterator iterator over all my elements.
 booleanremoveAll(DoubleCollection c)
     Removes all of my elements that are contained in the specified collection (optional operation).
 booleanremoveElement(double element)
     Removes a single occurrence of the specified element (optional operation).
 booleanretainAll(DoubleCollection c)
     Removes all of my elements that are not contained in the specified collection (optional operation).
 intsize()
     Returns the number of elements I contain.
 double[]toArray()
     Returns an array containing all of my elements.
 double[]toArray(double[] a)
     Returns an array containing all of my elements, using the given array if it is large enough.



Method Detail
add
boolean add(double element)(Code)
Ensures that I contain the specified element (optional operation). Returns true iff I changed as a result of this call.

If a collection refuses to add the specified element for any reason other than that it already contains the element, it must throw an exception (rather than simply returning false). This preserves the invariant that a collection always contains the specified element after this call returns.
Parameters:
  element - the value whose presence within me is to be ensured true iff I changed as a result of this call
throws:
  UnsupportedOperationException - when this operation is not supported
throws:
  IllegalArgumentException - may be thrown if some aspect of the specified element prevents it from being added to me




addAll
boolean addAll(DoubleCollection c)(Code)
DoubleCollection.add Adds all of the elements in the specified collection to me (optional operation).
Parameters:
  c - the collection of elements whose presence within me is to be ensured true iff I changed as a result of this call
throws:
  UnsupportedOperationException - when this operation is not supported
throws:
  IllegalArgumentException - may be thrown if some aspect of some specified element prevents it from being added to me



clear
void clear()(Code)
Removes all my elements (optional operation). I will be DoubleCollection.isEmpty empty after this method successfully returns.
throws:
  UnsupportedOperationException - when this operation is not supported



contains
boolean contains(double element)(Code)
Returns true iff I contain the specified element.
Parameters:
  element - the value whose presence within me is to be tested true iff I contain the specified element



containsAll
boolean containsAll(DoubleCollection c)(Code)
Returns true iff I DoubleCollection.contains contain all of the elements in the given collection.
Parameters:
  c - the collection of elements whose presence within me is to be tested true iff I contain the all the specified elements



isEmpty
boolean isEmpty()(Code)
Returns true iff I contain no elements. true iff I contain no elements.



iterator
DoubleIterator iterator()(Code)
Returns an DoubleIterator iterator over all my elements. This base interface places no constraints on the order in which the elements are returned by the returned iterator. an DoubleIterator iterator over all my elements.



removeAll
boolean removeAll(DoubleCollection c)(Code)
Removes all of my elements that are contained in the specified collection (optional operation). The behavior of this method is unspecified if the given collection is modified while this method is executing. Note that this includes the case in which the given collection is this collection, and it is not empty.
Parameters:
  c - the collection of elements to remove true iff I contained the at least one of thespecified elements, in other words, returns trueiff I changed as a result of this call
throws:
  UnsupportedOperationException - when this operation is not supported



removeElement
boolean removeElement(double element)(Code)
Removes a single occurrence of the specified element (optional operation).
Parameters:
  element - the element to remove, if present true iff I contained the specified element, in other words, iff I changed as a result of this call
throws:
  UnsupportedOperationException - when this operation is not supported



retainAll
boolean retainAll(DoubleCollection c)(Code)
Removes all of my elements that are not contained in the specified collection (optional operation). (In other words, retains only my elements that are contained in the specified collection.) The behavior of this method is unspecified if the given collection is modified while this method is executing.
Parameters:
  c - the collection of elements to retain true iff I changed as a result of this call
throws:
  UnsupportedOperationException - when this operation is not supported



size
int size()(Code)
Returns the number of elements I contain. the number of elements I contain



toArray
double[] toArray()(Code)
Returns an array containing all of my elements. The length of the returned array will be equal to my DoubleCollection.size size .

The returned array will be independent of me, so that callers may modify that returned array without modifying this collection.

When I guarantee the order in which elements are returned by an DoubleCollection.iterator iterator , the returned array will contain elements in the same order. an array containing all my elements




toArray
double[] toArray(double[] a)(Code)
Returns an array containing all of my elements, using the given array if it is large enough. When the length of the given array is larger than the number of elements I contain, values outside of my range will be unchanged.

The returned array will be independent of me, so that callers may modify that returned array without modifying this collection.

When I guarantee the order in which elements are returned by an DoubleCollection.iterator iterator , the returned array will contain elements in the same order.
Parameters:
  a - an array that may be used to contain the elements an array containing all my elements




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