Stack is an extension of the java.util.Vector class that provided a LIFO (last-in-first-out) data structure. This class provide the usual method such as push and pop. The peek method is used the get the top element of the stack without removing the item.

package org.kodejava.example.util;

import java.util.Stack;

public class StackExample {
    public static void main(String[] args) {
        Stack stack = new Stack();

        //
        // We stored some values in the stack object.
        //
        for (int i = 0; i < 10; i++) {
            stack.push(i);
            System.out.print(i + " ");
        }
        System.out.println("");

        //
        // Searching for an item in the stack. The position returned
        // as the distance from the top of the stack. Here we search
        // for the 3 number in the stack which is in the 7th row of
        // the stack.
        //
        int position = stack.search(3);
        System.out.println("Search result position: " + position);

        //
        // The current top value of the stack
        //
        System.out.println("Stack top: " + stack.peek());

        //
        // Here we popping out all the stack object items.
        //
        while (!stack.empty()) {
            System.out.print(stack.pop() + " ");
        }
    }
}

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Wayan Saryada

Programmer, runner, recreational diver, currently living in the island of Bali, Indonesia. Mostly programming in Java, creating web based application with Spring Framework, Hibernate / JPA.

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