1、實現棧用Stack類，此類是Vector類的子類；

1 importjava.util.Stack;2

3 public classStacks {4 static String[] months = {"Janunary","February","March","aprile","May","June","July","Aug","Sep",5 "October","November"};6 public static voidmain(String[] args) {7 Stack stk = newStack();8

9 for(int i=0;i

11

12 System.out.println("stk = " +stk);13

14 stk.addElement("The last line"); //棧頂元素

15 stk.addElement("The last line1");16 System.out.println("element 5 = " + stk.elementAt(11));17 System.out.println("popping element;");18 while(!stk.empty())19 System.out.println(stk.pop()); //出棧

20 }21 }

輸出結果為：

stk = [Janunary , February , March , aprile , May , June , July , Aug , Sep , October , November ]

element 5 = The last line

popping element;

The last line1

The last line

November

October

Sep

Aug

July

June

May

aprile

March

February

Janunary

2、Stack類的常用方法：

1)boolean empty() 測試棧是否為空

2) peek()　　查看棧頂，但不刪除

3)pop()　　出棧，同時刪除

4)push()　　入棧

5)int search(Object obj) 查找

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