Java Deque addAll() Method22 Mar 2025 | 2 min read The addAll() method of Java Deque Interface is used to add all the elements in a specified collection at the end of the deque. Specified by:
Syntax:Parameter:The above method consists of only one parameter:
Return:The above method returns true if the given deque is changed. Example 1Output: The marks for student1 : 28 25 26 The marks for student2 : 22 19 20 The total list for the marks : 28 25 26 22 19 20 Example 2Output: Enter the name of Employees for List 1: Sam Ram Priya Urvashi Enter the name of Employees for List 2: Ravi Rita Yashika Lavish The final list for the employees is given as : Sam Ram Priya Urvashi Ravi Rita Yashika Lavish Next TopicJava Deque |
Java Deque Method The method of Java Deque Interface inserts the given element into the queue which is represented by the particular deque. Specified by: offer in interface Queue<E> Syntax: boolean offer(E e) Parameter: The above method requires only one parameter : The element 'e' that needs to be...
2 min read
Java Deque Method The method of Java Deque Interface retrieves but does not remove the first element of the given deque. The above method differs from peekFirst only in one way that it throws an exception if the deque is empty. Syntax: public E Parameter: NA Return: The...
1 min read
Java Deque Method The method of Deque interface is used to remove the last occurrence of the specified element from the given deque. If there is no element in the deque, then it remains unchanged. The above method returns true if the specified element...
2 min read
Java Deque Method The method of Java Deque Interface returns an iterator for the elements in the specified deque in a reverse sequence. The elements will return in a sequential order from first(head) to the last(tail). Syntax: Iterator<E> Parameter: NA Return: The above method returns an iterator for the...
1 min read
Java Deque Method The method of Java Deque interface is used to retrieve and removes the last element of the given deque. The above method is different from the pollLast() method such that it throws an exception if the given deque is empty. Syntax: public E...
2 min read
Java Deque Method The method of Java Deque Interface is used to retrieve and remove the first element of the deque. The method may return null if the given deque is empty. Syntax: public E Parameter: NA Return: The above method is used to return the head of the...
1 min read
Java Deque peek () Method The method of Java Deque Interface is used to retrieve but not to remove the head of the deque. The method may return null if the given deque is empty. Specified by: peek in interface Queue<E> Syntax: E Parameter: NA Return: The above method...
2 min read
Java Deque Method The method of Java Deque Interface is used to retrieve and remove the last element of the deque. The method may return null if the given deque is empty. Syntax: public E Parameter: NA Return: The above method is used to return the tail of the...
2 min read
Java Deque Method The method of Java Deque Interface returns true if the deque contains the specified element. Specified by: contains in interface Collection<E> Syntax: boolean contains(Object o) Parameter: The above method consists of only one parameter: a.) The element 'o' which is already present in the deque and is tested. Return: The...
2 min read
Java Deque Method The method of Deque interface is used to insert the specified element into the specified queue represented by the deque and returns true upon success and throws an IllegalStateException if there is no current space available. Specified by: add in interface Collection<E> add in...
2 min read
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