Stack

import java.util.Stack;

public class StackTest {
	public static void main(String[] args) {
		Stack<String> stack = new Stack<String>();
		System.out.println("now the stack is " + isEmpty(stack));
		stack.push("1");
		stack.push("2");
		stack.push("3");
		stack.push("4");
		stack.push("5");
		System.out.println("now the stack is " + isEmpty(stack));
		System.out.println(stack.peek());
		System.out.println(stack.pop());
		System.out.println(stack.pop());
		System.out.println(stack.search("2"));
	}
	
	public static String isEmpty(Stack<String> stack) {
		return stack.empty() ? "empty" : "not empty";
	}
}