问题相关代码,请勿粘贴截图
class Appliance{
String name;
double price;
int num;
}
public class{
public static void main(String[] args){
login();
//实例化参数
Appliance a1 =new Appliance();
a1.name ="电风扇";
a1.price =124.23;
a1.num=1;
Appliance a2 =new Appliance();
a2.name ="洗衣机";
a2.price =4500.0;
a2.num=2;
Appliance a3 =new Appliance();
a3.name ="电视机";
a3.price =8800.9;
a3.num=3;
Appliance a4 =new Appliance();
a4.name ="冰箱";
a4.price =124.23;
a4.num=4;
Appliance a5 =new Appliance();
a5.name ="空调机";
a5.price =4456.0;
a5.num=5;
System.out.println("欢迎进入批发商城");
System.out.println("\t编号\t商品\t价格");
System.out.println("\t"+"1"+"\t"+ a1.name +"\t"+ a1.price);
System.out.println("\t"+"2"+"\t"+ a2.name +"\t"+ a2.price);
System.out.println("\t"+"3"+"\t"+ a3.name +"\t"+ a3.price);
System.out.println("\t"+"4"+"\t"+ a4.name +"\t"+ a4.price);
System.out.println("\t"+"5"+"\t"+ a5.name +"\t"+ a5.price);
//getNum(0);
//getCount(0);
pay(0.0,0.0);
//pay(0);
}
//登录密码方法
public static void login(){
//初始化用同户名密码
String id;
String password;
boolean isRight =true;
Scanner input=new Scanner(System.in);
//输入提示
System.out.print("请输入用户名");
id =input.next();
System.out.print("请输入密码");
password =input.next();
do{
if (id.equals("TOM")&&password.equals("123")){
System.out.println("登陆成功!");
break;
}
System.out.println("账户名或密码输入错误!,请重新输入");
id =input.next();
password =input.next();
}
while (isRight);}
//获取商品编号方法
public static int getNum(int x){
System.out.print("请输入您要批发的商品编号:");
Scanner input=new Scanner(System.in);
x=input.nextInt();
return x;
}
//批发数量方法
public static double getCount(double y){
System.out.print("请输入批发数量:");
Scanner input=new Scanner(System.in);
y=input.nextInt();
return y;
}
//选择价格方法
public static double price(int x,double j){
switch (x){
case 1:
j=124.23;
break;
case 2:
j=4500.0;
break;
case 3:
j=8800.9;
break;
case 4:
j=5000.88;
break;
case 5:
j=4456.0;
break;
default:
}
System.out.println("选择的商品价格是"+j);
return j;
}
//需要支付方法
public static double pay(double j,double y){
getNum(x);
getCount(y);
price(y,j);
double p = j*y;
System.out.println("您需要付款:"+p);
return p;
}
}
问题相关报错
est07.java:103: 错误: 找不到符号
getNum(x);
^
符号: 变量 x
位置: 类 Test07
Test07.java:105: 错误: 不兼容的类型: 从double转换到int可能会有损失
price(y,j);
^
注: 某些消息已经过简化; 请使用 -Xdiags:verbose 重新编译以获得完整输出
2 个错误
我的解答思路和尝试过的方法
将登陆、获取编号、批发数量、对应价格、和支付都做成方法。再在主类中进行调用