import java.util.Stack;
class Main {
public static void main(String[] args) {
Stack<String> animals= new Stack<>();
// Add elements to Stack
animals.push("Dog");
animals.push("Horse");
// Remove element from Stack
animals.pop();
// Access element from top of Stack
animals.peek();
}
}import java.util.Stack<E>;
Stack<Integer> myStack = new Stack<Integer>();
myStack.push(1);
myStack.pop();
myStack.peek();
myStack.empty(); // True if stack is empty// construct with non-primative elements only!
Stack<String> stack = new Stack<String>();
// to add a value to the top of the stack:
stack.push("Hello");
// to return and remove a value from the top:
String top = stack.pop();
// to return a value without removing it:
String peek = stack.peek();