The addAll(Collection) method of Stack Class is used to append all of the elements from the collection passed as a parameter to this function to the end of a Stack keeping in mind the order of return by the collection’s iterator.
boolean addAll(Collection C)
Parameters: The method accepts a mandatory parameter C which is a collection of ArrayList. It is the collection whose elements are needed to be appended at the end of the Stack.
Return Value: The method returns True if at least one action of append is performed, else False.
Below program illustrate the Java.util.Stack.addAll() method:
The Stack is: [Geeks, for, Geeks, 10, 20] The new Stack is: [Geeks, for, Geeks, 10, 20, A, Computer, Portal, for, Geeks]
The Stack is: [10, 20, 30, 40, 50] The new Stack is: [10, 20, 30, 40, 50, 1, 2, 3]
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