The Java.util.Stack.pop() method in Java is used to pop an element from the stack. The element is popped from the top of the stack and is removed from the same.
Syntax:
STACK.pop()
Parameters: The method does not take any parameters.
Return Value: This method returns the element present at the top of the stack and then removes it.
Exceptions: The method throws EmptyStackException is thrown if the stack is empty.
Below programs illustrate the Java.util.Stack.pop() method:
Program 1:
Java
// Java code to illustrate pop()import java.util.*;public class StackDemo { public static void main(String args[]) { // Creating an empty Stack Stack<String> STACK = new Stack<String>(); // Use add() method to add elements STACK.push("Welcome"); STACK.push("To"); STACK.push("Geeks"); STACK.push("For"); STACK.push("Geeks"); // Displaying the Stack System.out.println("Initial Stack: " + STACK); // Removing elements using pop() method System.out.println("Popped element: " + STACK.pop()); System.out.println("Popped element: " + STACK.pop()); // Displaying the Stack after pop operation System.out.println("Stack after pop operation " + STACK); }} |
Program 2:
Java
// Java code to illustrate pop()import java.util.*;public class StackDemo { public static void main(String args[]) { // Creating an empty Stack Stack<Integer> STACK = new Stack<Integer>(); // Use add() method to add elements STACK.push(10); STACK.push(15); STACK.push(30); STACK.push(20); STACK.push(5); // Displaying the Stack System.out.println("Initial Stack: " + STACK); // Removing elements using pop() method System.out.println("Popped element: " + STACK.pop()); System.out.println("Popped element: " + STACK.pop()); // Displaying the Stack after pop operation System.out.println("Stack after pop operation " + STACK); }} |
Output:
Initial Stack: [10, 15, 30, 20, 5] Popped element: 5 Popped element: 20 Stack after pop operation [10, 15, 30]
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