IBM基地(嘉兴)培训 java笔记(2)

IBM基地(嘉兴)培训 java笔记

上午:

一: 优化了昨天的继承的程序

二:让我们写“买票”的小程序

1 .买票的思想 ：

票自身的属性—卖票的地点——买票——买票的人——测试改程序

2 .将以上的各类关联起来

3 关键代码如下:

public class TestTicket{

public static void main(String[] args){

Person p = new Person("zs");

Ticket t = p.buyTicket("动车","杭州");

System.out.println(p+"买了"+t); } }

class Ticket{

String name;

float price = 120.50f;

public Ticket(String name,float price){

= name;

this.price = price; }

public Ticket(String name){

= name;

}

public String toString(){

return " 票名：:"+name+", 价格:"+price; } }

class TicketStore{

String name;

int tno = 30;

public void setName(String name){

= name;

}

public TicketStore(String name){

= name;

}

public Ticket sellTicket(String tname){

Ticket t = null;

if(tno>1){

t = new Ticket(tname);

tno--;

}else{

throw new RuntimeException("no ticket.");