Java stack Page

Java Stack

Java Stack is a class in the Java Collections Framework that represents a last-in-first-out (LIFO) stack of objects. It extends the Vector class with five operations that allow a vector to be treated as a stack. The usual push and pop operations are provided, as well as a method to peek at the top item on the stack, a method to test for whether the stack is empty, and a method to search the stack for an item and discover how far it is from the top. Stack inherits from Vector, which is synchronized, making Stack synchronized as well, but this comes with a performance cost. Due to its synchronization overhead and the availability of more efficient alternatives like ArrayDeque, Stack is less commonly used in modern Java programming. However, it can still be suitable for simple stack-based algorithms or scenarios where synchronization is required. Overall, Stack provides a convenient way to implement stack-based data structures in Java applications but may not be the most efficient choice in all scenarios.