package 集合类.list类;
import java.util.Date;
import java.util.Stack;
/**
* stack类继承与vector类
* @author jjj
*
*/
public class Stack类 {
public static void main(String[] args) {
Stack s = new Stack();
s.push("hello");
s.push(new Date());
s.push(400); // 自动封装 , 等价于 s.push(new Integer(400));
s.push(3.14);
System.out.println(" 弹栈前 :size=" + s.size());
System.out.println(s.pop());
System.out.println(" 弹栈后 :size=" + s.size());
System.out.println(s.peek());
System.out.println("peek 操作后 :size=" + s.size());
while(!s.isEmpty())
System.out.println(s.pop());
}
}