JavaSE StackDemo

import java.util.Stack;

/**
 * 堆栈结构
 * @author Administrator
 *
 */
public class StackDemo {
    public static void main(String[] args) {
        Stack<String> ss = new Stack<String>();
        // 压栈
        ss.push("a");
        ss.push("b");
        // 出栈
        System.out.println(ss.pop());
        System.out.println(ss.pop());
        System.out.println(ss.pop());
    }
}