摘要： http://blog.csdn.net/wodwl/article/details/4368759java.util.*;例：Stack<Integer> stack = new Stack<Integer>(); stack.push(3); stack.push(4); System.out.println(stack); int a = stack.pop(); System.out.println(a); System.out.println(stack); System.out.println(stack.peek()); // 查看栈顶元素而不移除它 Sy 阅读全文