Java ArrayBlockingQueue peek() Method7 Jan 2025 | 2 min read The peek() method of Java ArrayBlockingQueue class retrieves the head of this queue, but doesn't remove it. The method returns null if this queue is empty. Syntax:Parameters:NA Specified By:The peek() method of ArrayBlockingQueue class is specified by peek() method in interface Queue Return Value:The peek() method returns this queue's head and if this queue is empty,it returns null. Example 1Output: Head of queue : Reema
Queue : [Reema, Rahul, Rita, Ramesh]
Example 2Output: Hinna got 97 marks. Vinni got 87 marks. Rima got 77 marks. Topper of the class is Hinna Example 3Output: Head of queue is : null Next TopicJava-arrayblockingqueue-poll-method |
The remove() method of ArrayBlockingQueue class removes the specified element from the queue, if that element is present in the queue. Syntax: public boolean remove(Object o) Parameters: The parameter 'o' is passed which is removed from the queue, if the element is present. Specified By: The remove () method of ArrayBlockingQueue...
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The take() method of Java ArrayBlockingQueue class retrieves and removes the first element of the ArrayBlockingQueue, waiting (if necessary) until an element becomes available. Syntax: public E take() throws InterrupedException Parameters: NA Specified By: The take() method of ArrayBlockingQueue class is specified by: take in interface BlockingQueue<E>. Return Value: The take() method returns the...
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The poll() method of ArrayBlockingQueue class retrieves the head of this queue awaiting till the specified time if essential for an element to be available, and also removes it. The method returns null if this queue is empty. Syntax: 1.public E poll() 2.public E poll(long timeout,TimeUnit unit)throws InterruptedException Parameters: NA timeout...
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The toArray() method of Java ArrayBlockingQueue returns an array containing all the elements of the ArrayBlockingQueue, in proper sequence. The syntax of toArray() returns an array where the runtime of the returned array is that of the specified array, and if the queue fits in...
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The Spliterator() method of Java ArrayBlockingQueue class returns a Spliterator over the elements in this ArrayBlockingQueue. Syntax: public Spliterator<E> spliterator() Parameters: NA Specified By: The Spliterator () method of ArrayBlockingQueue class is specified by: Spliterator in interface Collection<E>. Spliterator in interface Iterable<E> Return Value: The Spliterator () method returns a Spliterator over the elements in...
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The size() method of Java ArrayBlockingQueue class returns the total number of elements in the ArrayBlockingQueue. Syntax: public int size() Parameters: NA Specified By: The size() method of ArrayBlockingQueue class is specified by: Size in interface Collection<E>. Size in class AbstractCollection<E> Return Value: The size() method returns the total number of elements in this queue. Example...
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The removeIf() method of Java ArrayBlockingQueue class removes the elements of the ArrayBlockingQueue that satisfies the given predicate filter. Syntax: public boolean removeIf(Predicate<? Super E> filter) Parameters: The parameter filter is a predicate which returns true for the elements to be removed. Specified By: The removeIf() method of ArrayBlockingQueue class is...
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The forEach() method of Java ArrayBlockingQueue class executes the specified action for each element of Iterable till all the elements are processed or the action throws an exception. Syntax: public void forEach(Consumer<? super E> action) Parameters: action - This is the action to be performed for every element. Specified By: The...
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The retainAll() method of Java ArrayBlockingQueue class retains only the elements of the ArrayBlockingQueue that are contained in the specified collection and removes rest of the elements. Syntax: public boolean retainAll(Collection<?> c) Parameters: Here, the parameter c is the collection containing elements to be retained in the ArrayBlockingQueue collection. Specified...
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The iterator() method of ArrayBlockingQueue class returns an iterator across the elements of this queue in a sequential manner. The elements returned will follow order from first (head) to last (tail). Syntax: public Iterator<E> iterator() Parameters: NA Specified By: The iterator() method of ArrayBlockingQueue class is specified by: iterator() method in interface Collection<E>. iterator()...
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