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package resourceCode.util;
import resourceCode.lang.IterableMe;
/**
* Collection 接口源码
* jdk 1.6.0_13
* @author ken
* @param <E>
* 2017-4-1 上午08:56:13
*/
public interface CollectionMe<E> extends IterableMe<E> {
// Query Operations
/**
* Returns the number of elements in this collection.
* If this collection contains more than Integer.MAX_VALUE elements,
* returns Integer.MAX_VALUE
*
* @return the number of elements in this collection
*/
public int size();
/**
* Returns true if this collection contains no elements.
* @return true if this collection contains no elements
*/
public boolean isEmpty();
/**
* Returns true if this collection contains the specified element.
* More formally, returns true if and only if this collection
* contains at least one element e such that
* (o==null && e==null&& o.equals(e)).
*
* @param o element whose presence in this collection is to be tested
* @return true if this collection contains the specified
* element
* @throws ClassCastException if the type of the specified element
* is incompatible with this collection (optional)
* @throws NullPointerException if the specified element is null and this
* collection does not permit null elements (optional)
*/
public boolean contains(Object o);
/**
* Returns an iterator over the elements in this collection. There are no
* guarantees concerning the order in which the elements are returned
* (unless this collection is an instance of some class that provides a
* guarantee).
*
* @return an Iterator over the elements in this collection
*/
public IteratorMe<E> iterator();
/**
* Returns an array containing all of the elements in this collection.
* If this collection makes any guarantees[ˌgærənˈti:] 保证，担保 as to what order its elements
* are returned by its iterator, this method must return the elements in the same order.
*
* The returned array will be "safe" in that no references to it are
* maintained[mein'teind]保持 by this collection.
* (In other words, this method must allocate[ˈæləkeɪt]分配 a new array
* even if this collection is backed by an array).
* The caller is thus free to modify the returned array.
*
* This method acts as[担任] bridge between array-based and collection-based APIs.
*
* @return an array containing all of the elements in this collection
*/
public Object[] toArray();
/**
* Returns an array containing all of the elements in this collection;
* the runtime type of the returned array is that of the specified array.
* If the collection fits in the specified array, it is returned therein.
* Otherwise, a new array is allocated with the runtime type of the
* specified array and the size of this collection.
*
* If this collection fits in the specified array with room to spare
* (i.e., the array has more elements than this collection), the element
* in the array immediately following the end of the collection is set to
* null. (This is useful in determining the length of this
* collection only if the caller knows that this collection does
* not contain any null elements.)
*
* If this collection makes any guarantees as to what order its elements
* are returned by its iterator, this method must return the elements in
* the same order.
*
* Like the {@link #toArray()} method, this method acts as bridge between
* array-based and collection-based APIs. Further, this method allows
* precise control over the runtime type of the output array, and may,
* under certain circumstances, be used to save allocation costs.
*
* Suppose x is a collection known to contain only strings.
* The following code can be used to dump the collection into a newly
* allocated array of String:
*
* String[] y = x.toArray(new String[0]);
*
* Note that toArray(new Object[0]) is identical in function to
* toArray().
*
* @param a the array into which the elements of this collection are to be
* stored, if it is big enough; otherwise, a new array of the same
* runtime type is allocated for this purpose.
* @return an array containing all of the elements in this collection
* @throws ArrayStoreException if the runtime type of the specified array
* is not a supertype of the runtime type of every element in
* this collection
* @throws NullPointerException if the specified array is null
*/
public <T> T[] toArray(T[] a);
// Modification Operations
/**
* Ensures that this collection contains the specified element (optional
* operation). Returns true if this collection changed as a
* result of the call. (Returns false if this collection does
* not permit duplicates and already contains the specified element.)
*
* Collections that support this operation may place limitations on what
* elements may be added to this collection. In particular, some
* collections will refuse to add null elements, and others will
* impose restrictions on the type of elements that may be added.
* Collection classes should clearly specify in their documentation any
* restrictions on what elements may be added.
*
* If a collection refuses to add a particular element for any reason
* other than that it already contains the element, it must throw
* an exception (rather than returning false). This preserves
* the invariant that a collection always contains the specified element
* after this call returns.
*
* @param e element whose presence in this collection is to be ensured
* @return true if this collection changed as a result of the
* call
* @throws UnsupportedOperationException if the add operation
* is not supported by this collection
* @throws ClassCastException if the class of the specified element
* prevents it from being added to this collection
* @throws NullPointerException if the specified element is null and this
* collection does not permit null elements
* @throws IllegalArgumentException if some property of the element
* prevents it from being added to this collection
* @throws IllegalStateException if the element cannot be added at this
* time due to insertion restrictions
*/
public boolean add(E e);
/**
* Removes a single instance of the specified element from this
* collection, if it is present (optional operation). More formally,
* removes an element e such that
* (o==null && e==null && o.equals(e)), if
* this collection contains one or more such elements. Returns
* true if this collection contained the specified element (or
* equivalently, if this collection changed as a result of the call).
*
* @param o element to be removed from this collection, if present
* @return true if an element was removed as a result of this call
* @throws ClassCastException if the type of the specified element
* is incompatible with this collection (optional)
* @throws NullPointerException if the specified element is null and this
* collection does not permit null elements (optional)
* @throws UnsupportedOperationException if the remove operation
* is not supported by this collection
*/
boolean remove(E o);
// Bulk[bʌlk]大块，大量 Operations
/**
* 判断列表中是否包含指定collection的所有元素
*
* Returns true if this collection contains all of the elements
* in the specified collection.
*
* @param c collection to be checked for containment in this collection
* @return true if this collection contains all of the elements
* in the specified collection
* @throws ClassCastException if the types of one or more elements
* in the specified collection are incompatible with this
* collection (optional)
* @throws NullPointerException if the specified collection contains one
* or more null elements and this collection does not permit null
* elements (optional), or if the specified collection is null
* @see #contains(Object)
*/
boolean containsAll(CollectionMe<?> c);
/**
* Adds all of the elements in the specified collection to this collection
* (optional operation). The behavior of this operation is undefined if
* the specified collection is modified while the operation is in progress.
* (This implies that the behavior of this call is undefined if the
* specified collection is this collection, and this collection is
* nonempty.)
*
* @param c collection containing elements to be added to this collection
* @return true if this collection changed as a result of the call
* @throws UnsupportedOperationException if the addAll operation
* is not supported by this collection
* @throws ClassCastException if the class of an element of the specified
* collection prevents it from being added to this collection
* @throws NullPointerException if the specified collection contains a
* null element and this collection does not permit null elements,
* or if the specified collection is null
* @throws IllegalArgumentException if some property of an element of the
* specified collection prevents it from being added to this
* collection
* @throws IllegalStateException if not all the elements can be added at
* this time due to insertion restrictions
* @see #add(Object)
*/
boolean addAll(CollectionMe<? extends E> c);
/**
* Removes all of this collection's elements that are also contained in the
* specified collection (optional operation). After this call returns,
* this collection will contain no elements in common with the specified
* collection.
*
* @param c collection containing elements to be removed from this collection
* @return true if this collection changed as a result of the
* call
* @throws UnsupportedOperationException if the removeAll method
* is not supported by this collection
* @throws ClassCastException if the types of one or more elements
* in this collection are incompatible with the specified
* collection (optional)
* @throws NullPointerException if this collection contains one or more
* null elements and the specified collection does not support
* null elements (optional), or if the specified collection is null
* @see #remove(Object)
* @see #contains(Object)
*/
boolean removeAll(CollectionMe<?> c);
/**
* (取两个list的交集)
*
* Retains only the elements in this collection that are contained in the
* specified collection (optional operation). In other words, removes from
* this collection all of its elements that are not contained in the
* specified collection.
*
* @param c collection containing elements to be retained in this collection
* @return true if this collection changed as a result of the call
* @throws UnsupportedOperationException if the retainAll operation
* is not supported by this collection
* @throws ClassCastException if the types of one or more elements
* in this collection are incompatible with the specified
* collection (optional)
* @throws NullPointerException if this collection contains one or more
* null elements and the specified collection does not permit null
* elements (optional), or if the specified collection is null
* @see #remove(Object)
* @see #contains(Object)
*/
boolean retainAll(CollectionMe<?> c);
/**
* Removes all of the elements from this collection (optional operation).
* The collection will be empty after this method returns.
*
* @throws UnsupportedOperationException if the clear operation
* is not supported by this collection
*/
void clear();
// Comparison and hashing
/**
* Compares the specified object with this collection for equality. <p>
*
* While the Collection interface adds no stipulations to the
* general contract for the Object.equals, programmers who
* implement the Collection interface "directly" (in other words,
* create a class that is a Collection but is not a Set
* or a List) must exercise care if they choose to override the
* Object.equals. It is not necessary to do so, and the simplest
* course of action is to rely on Object's implementation, but
* the implementor may wish to implement a "value comparison" in place of
* the default "reference comparison." (The List and
* Set interfaces mandate such value comparisons.)<p>
*
* The general contract for the Object.equals method states that
* equals must be symmetric (in other words, a.equals(b) if and
* only if b.equals(a)). The contracts for List.equals
* and Set.equals state that lists are only equal to other lists,
* and sets to other sets. Thus, a custom equals method for a
* collection class that implements neither the List nor
* Set interface must return false when this collection
* is compared to any list or set. (By the same logic, it is not possible
* to write a class that correctly implements both the Set and
* List interfaces.)
*
* @param o object to be compared for equality with this collection
* @return true if the specified object is equal to this
* collection
*
* @see Object#equals(Object)
* @see Set#equals(Object)
* @see List#equals(Object)
*/
boolean equals(Object o);
/**
* Returns the hash code value for this collection. While the
* Collection interface adds no stipulations to the general
* contract for the Object.hashCode method, programmers should
* take note that any class that overrides the Object.equals
* method must also override the Object.hashCode method in order
* to satisfy the general contract for the Object.hashCodemethod.
* In particular, c1.equals(c2) implies that
* c1.hashCode()==c2.hashCode().
*
* @return the hash code value for this collection
*
* @see Object#hashCode()
* @see Object#equals(Object)
*/
int hashCode();
}