Remove an element from a Stack in Java

An element can be removed from a stack using the java.util.Stack.pop() method. This method requires no parameters and it removes the element at the top of the stack. It returns the element that was removed.

A program that demonstrates this is given as follows −

Example

 Live Demo

import java.util.Stack;
public class Demo {
   public static void main (String args[]) {
      Stack stack = new Stack();
      stack.push("Apple");
      stack.push("Mango");
      stack.push("Guava");
      stack.push("Pear");
      stack.push("Orange");
      System.out.println("The stack elements are: " + stack);
      System.out.println("The element that was popped is: " + stack.pop());
      System.out.println("The stack elements are: " + stack);
   }
}

Output

The stack elements are: [Apple, Mango, Guava, Pear, Orange]
The element that was popped is: Orange
The stack elements are: [Apple, Mango, Guava, Pear]

Now let us understand the above program.

The Stack is created. Then Stack.push() method is used to add the elements to the stack. The stack is displayed. A code snippet which demonstrates this is as follows −

Stack stack = new Stack();
stack.push("Apple");
stack.push("Mango");
stack.push("Guava");
stack.push("Pear");
stack.push("Orange");
System.out.println("The stack elements are: " + stack);

The Stack.pop() method is used to remove the top element of the stack and display it. Then the stack is again displayed. A code snippet which demonstrates this is as follows −

System.out.println("The element that was popped is: " + stack.pop());
System.out.println("The stack elements are: " + stack);

Samual Sam

Published on 11-Jan-2019 11:37:25