關于Stack的說明

用程式來說明一切吧

package com.tianyu.summer;

import java.util.*;

public class StackTest {

 public StackTest() {

  Stack stack = new Stack();

  Boolean bool = Boolean.TRUE;

  Character character = new Character('$');

  try {

   stack.push(bool);

   printStack(stack);

   stack.push(character);

   printStack(stack);

   stack.pop(); //

   printStack(stack);

   stack.pop();

   printStack(stack);

   stack.pop();

  } catch (EmptyStackException e) {

   e.printStackTrace();

  }

 }

 public void printStack(Stack stack) {

  if (stack.isEmpty()) {

   System.out.println("堆棧為空");

  } else {

   System.out.print("堆棧包含:");

   Enumeration items = stack.elements();

   while (items.hasMoreElements()) {

    System.out.print(items.nextElement() + " ");

   }

   System.out.print("/n");

  }

 }

 public void removeStack(Stack stack) {

  if (stack.isEmpty()) {

   System.out.println("堆棧為空");

  } else {

   System.out.print("堆棧包含:");

   Enumeration items = stack.elements();

   while (items.hasMoreElements()) {

    System.out.print(items.nextElement() + " ");

   }

   System.out.print("/n");

  }

 }

 public static void main(String[] args) {

  new StackTest();

 }

}