java代码超市 java超市购物代码( 五 )


}
public void setPrice(double price) {
this.price = price;
}
public double calc( ){
double sum=price*num;
System.out.println("您消费共计java代码超市:"+sum+"¥");
return sum;
}
}
package test;
import java.util.HashMap;
import java.util.Map;
import java.util.Scanner;
import entity.Market;
public class Test {
private static MapInteger,Market goods=new HashMapInteger, Market();
public static void main(String[] args) {
System.out.println("-------超市计价系统-------");
String goods1="可口可乐";
String goods2="爆米花";
String goods3="益达";
printTable("编号","商品","价格");
printTable("1",goods1,"3.0¥");
printTable("2",goods2,"5.0¥");
printTable("3",goods3,"10.0¥");
goods.put(1, new Market(1, 1, goods1, 3.0));
goods.put(2, new Market(2, 1,goods2, 5.0));
goods.put(3, new Market(3, 1, goods3, 10.0));
Scanner input = new Scanner(System.in);
System.out.println("请输入商品java代码超市的编号:");
int num = input.nextInt();
System.out.println("请输入商品java代码超市的数量");
int amount = input.nextInt();
Market market = goods.get(num);
market.setNum(amount);
market.calc();
}
private static void printTable(String row1,String row2,String row3 ) {
System.out.print(row1);
int times=12;
if (row2!="商品") {
times=5;
}
for (int i = 0; itimes; i++) {
System.out.print(" ");
}
System.out.print(row2);
for (int i = 0; i10; i++) {
System.out.print(" ");
}
System.out.print(row3);
System.out.println("\n");
}
}
//测试结果java代码超市:
-------超市计价系统-------
编号商品价格
1可口可乐3.0¥
2爆米花5.0¥
3益达10.0¥
请输入商品的编号:
3
请输入商品的数量
5
您消费共计:50.0¥
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