1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
|
//定义商品类,包含名称,货号,单价,数量计价单位,金额
public
class
GoodsItem{
private
String name;
private
String id;
private
int
number;
private
String unit;
private
double
money;
//构造方法
public
GoodsItem(){}
GoodItem(String name,String id,
double
price
,
int
number,String unit,
double
money){
this
.name = name ;
this
.id= id;
this
.price = price;
this
.number = number;
this
.money = money;
}
//get/set 方法
public
String getName() {
return
name;
}
public
void
setName(String name) {
this
.name = name;
}
public
String getId() {
return
id;
}
public
void
setId(String id) {
this
.id = id;
}
public
double
getPrice() {
return
price;
}
public
void
setPrice(
double
price) {
this
.price = price;
}
public
int
getNumber() {
return
number;
}
public
void
setNumber(
int
number) {
this
.number = number;
}
public
double
getMoney() {
return
money;
}
public
void
setMoney(
double
money) {
this
.money = money;
}
}
//实现主干逻辑,main方法.
import
java.util.ArrayList;
import
java.util.Scanner;
public
class
ShoppingReceipt {
static
ArrayList<GoodItem>data =
new
ArrayList<GoodItem>();
public
static
void
main(String[] args) {
// TODO Auto-generated method stub
System.out.println(
"欢迎使用超市管理系统"
);
initData();
}
private
static
void
initData() {
// TODO Auto-generated method stub
GoodItem sls =
new
GoodItem(
"少林寺核桃"
,
"090115"
,
15.5
,
0
,
"个"
,
0
);
GoodItem shk =
new
GoodItem(
"尚康饼干"
,
"090027"
,
14.5
,
0
,
"个"
,
0
);
data.add(sls);
data.add(shk);
while
(
true
){
System.out.println(
"请输入你要进行的操作:1 输入购买数量 2 打印小票 3 退出"
);
Scanner sc =
new
Scanner(System.in);
int
optNumber = sc.nextInt();
switch
(optNumber){
case
1
:
enterNumber();
break
;
case
2
:
printReceipt();
case
3
:
System.out.println(
"欢迎下次光临"
);
System.exit(
0
);
default
:
System.out.println(
"请输入正确的数字!"
);
break
;
}
}
}
private
static
void
printReceipt() {
// TODO Auto-generated method stub
System.out.println(
"欢迎光临"
);
System.out.println(
"品名 售价 数量 单位 金额"
);
System.out.println(
"-------------------"
);
int
totalNumber =
0
;
double
totalMoney =
0
;
for
(
int
i =
0
; i < data.size(); i++) {
//依次获取每一个商品项
GoodItem g = data.get(i);
//打印商品项
System.out.println(
""
+g.getName()+g.getId()+
" "
+g.getPrice()+
" "
+g.getNumber()+
" + "
+g.getMoney());
//累加数量与金额
totalNumber += g.getNumber();
totalMoney += g.getMoney();
}
System.out.println(
"-------------------------------------------"
);
//票脚
System.out.println(
"共"
+data.size()+
"项商品"
);
System.out.println(
"共"
+totalNumber+
"件商品"
);
System.out.println(
"共"
+totalMoney+
"元"
);
System.out.println();
}
private
static
void
enterNumber() {
// TODO Auto-generated method stub
for
(
int
i =
0
;i<data.size();i++){
GoodItem thisGoods = data.get(i);
String thisGoodsName = thisGoods.getName();
System.out.println(
"请输入"
+thisGoodsName+
"的购买数量"
);
Scanner sc =
new
Scanner(System.in);
int
thisGoodsNumber =sc.nextInt();
double
thisGoodsMoney = thisGoods.getPrice()*thisGoodsNumber;
thisGoods.setNumber(thisGoodsNumber);
thisGoods.setMoney(thisGoodsMoney);
}
}
}
|
本文转自xinsz08の平行时空博客51CTO博客,原文链接http://blog.51cto.com/xinsz08/1940339如需转载请自行联系原作者 维度2018 |