package com.lanhuigu.java.ListTest;
import java.util.Stack;
public class StackTest {
 public static void main(String[] args) {
  Stack<String> staffs = new Stack<String>();
  // 入栈顺序: a,b,c,d,e 
  staffs.push("a");
  staffs.push("b");
  staffs.push("c");
  staffs.push("d");
  staffs.push("e");
  // 出栈顺序: e,d,c,b,a 
  while( !staffs.isEmpty()) {
   System.out.print(staffs.pop() + " ");
  }
 }
}

package com.lanhuigu.java.ListTest;
import java.util.Stack;
public class StackMethodTest {
 public static void main(String[] args) {
  Stack<String> staffs = new Stack<String>();
  // 入栈顺序: a,b,c,d,e 
  staffs.push("a");
  staffs.push("b");
  staffs.push("c");
  staffs.push("d");
  staffs.push("e");
  System.out.println("empty():" + staffs.empty());
  System.out.println("peek():" + staffs.peek());
  System.out.println("search(Object o):" + staffs.search("a"));
  System.out.println("search(Object o):" + staffs.search("e"));
  System.out.println("search(Object o):" + staffs.search("no"));
  // 出栈顺序: e,d,c,b,a 
  while( !staffs.isEmpty()) {
   System.out.print(staffs.pop() + " ");
  }
  System.out.println("=====空栈中使用方法=======");
  System.out.println("empty():" + staffs.empty());
  //System.out.println("peek():" + staffs.peek());// 在空栈中使用时报错，因为没有栈顶元素 
  System.out.println("search(Object o):" + staffs.search("a"));
  System.out.println("search(Object o):" + staffs.search("e"));
  System.out.println("search(Object o):" + staffs.search("no"));
  //System.out.print(staffs.pop());// 空栈中移除栈顶元素，报错
 }
}