But whether it’s an at-home dye job gone wrong or you’re just not in love with your latest salon highlights, hair color blunders can be fixed-and you don’t even have to grow your hair out or wait months for the dye to fade. i.e.No matter how extensively you research store-bought hair dye or how thoroughly you explain to your stylist that you want 2001-era Jennifer Aniston highlights and not 2003, sometimes, your hair color simply doesn’t turn out how you expected it to. Interface also implement the Iterable interface. Interface extends the Iterable interface and therefore all the subclasses of Collection The Iterable interface is the root interface for all the collection classes. It removes the last elements returned by the iterator. It returns the element and moves the cursor pointer to the next element. It returns true if the iterator has more elements otherwise it returns false. There are only three methods in the Iterator interface. Iterator interface Iterator interface provides the facility of iterating the elements in a forward direction only. It returns the hash code number of the collection. It generates a Spliterator over the specified elements in the collection. It returns a sequential Stream with the collection as its source. It returns a possibly parallel Stream with the collection as its source. Here, the runtime type of the returned array is that of the specified array. It is used to search the specified collection in the collection. It removes the total number of elements from the collection. It returns the total number of elements in the collection. It is used to delete all the elements of invoking collection except the specified collection. It is used to delete all the elements of the collection that satisfy the specified predicate. It is used to delete all the elements of the specified collection from the invoking collection.ĭefault boolean removeIf(Predicate filter) It is used to delete an element from the collection. It is used to insert the specified collection elements in the invoking collection. It is used to insert an element in this collection. There are many methods declared in the Collection interface. The java.util package contains all the classes and interfaces for the Collection framework. Let us see the hierarchy of Collection framework. What is the difference between Java collection and Java collections?.How can we sort the elements of an object? What is the difference between Comparable and Comparator interfaces?.What is the difference between Iterator and Enumeration interface in collection framework?.What is the difference between HashMap and Hashtable class?.What is the difference between HashSet and HashMap classes in collection framework?.What is the difference between ArrayList and Vector classes in collection framework?.What is the difference between ArrayList and LinkedList classes in collection framework?.What are the two ways to iterate the elements of a collection?.Interfaces and its implementations, i.e., classes.The Collection framework represents a unified architecture for storing and manipulating a group of objects. It represents a set of classes and interfaces.What is Collection in JavaĪ Collection represents a single unit of objects, i.e., a group. Java Collection framework provides many interfaces (Set, List, Queue, Deque) and classes ( ArrayList, Vector, LinkedList, PriorityQueue, HashSet, LinkedHashSet, TreeSet). Java Collection means a single unit of objects. Java Collections can achieve all the operations that you perform on a data such as searching, sorting, insertion, manipulation, and deletion. The Collection in Java is a framework that provides an architecture to store and manipulate the group of objects.
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