Java连载69-接受输入、用数组模拟栈

package com.bjpowernode.java_learning;

?

public class D69_1_ {

  //编写一个程序模拟酒店的管理系统：预定房间、退房.......

  public static void main(String[] args) {

   

  }

}

class Room{

  String no;

  String type;//“标准间”“双人间”“豪华间”

  boolean isUse;//true表示占用，false表示空闲

}

class Hotel{

  //规定酒店：五层，每层十个房间，1，2层标准间，3，4双人间，5层豪华间

  Room[][] rooms;

  //无参数

  Hotel(){

    this(5,10);

  }

  Hotel(int rows,int cols){

    rooms = new Room[rows][cols];

    /*

     * rooms[0][0]....

     * rooms[4][9]....

     */

   

  }

  //对外提供预定方法

}

 

package com.bjpowernode.java_learning;

?

import java.util.Scanner;

?

public class D69_2_AcceptUserInput {

  public static void main(String[] args) {

    Scanner s = new Scanner(System.in);

    //程序运行到此处，停下来，等待用户的输入

    String userInput = s.next();

    System.out.println("您输入了："+userInput);

  }

}

?

package com.bjpowernode.java_learning;

?

public class D69_3_ArraysSimulateStack {

  public static void main(String[] args) {

    Stack s = new Stack(2);

    User69 u1 = new User69("jfidsa",12);

    User69 u2 = new User69("jfiddfsa",12);

    User69 u3 = new User69("jfidfdsfsa",12);

    try {

      s.push(u1);

      s.push(u2);

      s.push(u3);

    }catch(StackOperationException e) {

      System.out.println(e);

    }

//      System.out.println(s.pop());

  }

?

}

class Stack{

  //使用数组存储数据,注意栈可以存储多个引用类型的元素

  Object[] elements;

  //指向栈顶元素上方的一个帧

  int index;

 

  //栈默认的初始化容量是10

  Stack(){

    this(10);

  }

  Stack(int max){

    elements = new Object[max];

  }

  //栈应该对外提供一个压栈的方法

  public void push(Object element) throws StackOperationException{

    if (index == elements.length) {

      throw new StackOperationException("栈已经满了");

    }

    elements[index++] = element;

  }

  //对外提供一个弹栈的方法

  public Object pop() throws StackOperationException{

    if(index == 0) {

      throw new StackOperationException("栈已经空了");

    }

    return elements[--index];

  }

}

?

class User69{

  String name;

  int age;

  User69(String name,int age){

    this.name = name;

    this.age = age;

   

  }

  public String toString() {

    return "User是我";

  }

}

class StackOperationException extends Exception{

  public StackOperationException() {}

  public StackOperationException(String msg) {

    super(msg);

  }

 

}