Stack

java.util.Stack

caution

Use ArrayDeque for using Stack :~

The Standard Class Library provides the Stack class, but, according to JavaDoc, a more complete and consistent set of LIFO stack operations is provided by the Deque Interface and its implementations, which should be used in preference to this class. So, it is recommended to use Deque for stacks.

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caution

Must Use ArrayDeque class to declare Stack as it contains all the methods of Stack and can also implement Queue as well.

• Stack cannot use for_Each loop to traverse through its elements. Iterator class with its methods .hasNext() & .next() must be used to print and traverse through all its elements.
• Stack uses Last In First Out (LIFO)
• Stack can only use push() to add elements and pop() to remove and print elements and

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Stack Methods

push()

pop()

peek()