Stack

/**
 * Write a description of class Stack here.
 *
 * @Samuel Berkat Hulu
 * @Version 5.0
 */
import java.util.ArrayList;
import java.util.List;
public class Stack
{
    private List<Object> list=new ArrayList<Object>();
    private int currentIndex =-1;

    public void push(Object object)
    {
        list.add(object);
        currentIndex++;
    }

    public Object pop()
    {
        Object object=list.remove(currentIndex);
        currentIndex--;
        return object;
    }

    public int count()
    {
        return list.size();
    }

    public Object peek()
    {
        return list.get(currentIndex);
    }

    public void clear()
    {
        list.clear();
        currentIndex=-1;
    }

    public static void main(String[] args)
    {

    }

}