具体实现功能：

具体代码实现：

[code]package day01;

public class Shopping{
public static void main(String[] args){
//输出表头固定数据
System.out.println("------------------商场库存清单------------------");
System.out.println("品牌型号                                    尺寸                      价格               库存数");
//定义表格中的数据变量
//品牌型号,String, 尺寸,价格 double  库存int
String MacBrand = "AppleMacBook Air";
double MacSize = 13.3;
double MacPrice = 7388.00;
int    MacCount = 6;

String LenovoBrand = "Y7000P";
double LenovoSize = 15.6;
double LenovoPrice = 8099.00;
int    LenovoCount = 10;

String AsusBrand = "飞行堡垒7";
double AsusSize = 15.6;
double AsusPrice = 6889.00;
int    AsusCount = 17;

String RazerBrand = "雷蛇灵刃15";
double RazerSize = 15.6;
double RazerPrice = 9999.00;
int    RazerCount = 12;

String HpBrand = "暗影精灵5";
double HpSize = 15.6;
double HpPrice = 7299.00;
int    HpCount = 8;

String MECHREVOBrand = "深海泰坦X3";
double MECHREVOSize = 17.3;
double MECHREVOPrice = 7799.00;
int    MECHREVOCount = 15;

String DellBrand = "游匣G3";
double DellSize = 15.6;
double DellPrice = 6599.00;
int    DellCount = 20;

//商品信息变量进行打印,变量之间加入一定的字符串空格
System.out.println(MacBrand+"    "+MacSize+"      "+MacPrice+"      "+MacCount);
System.out.println(LenovoBrand+"              "+LenovoSize+"      "+LenovoPrice+"      "+LenovoCount);
System.out.println(AsusBrand+"             "+AsusSize+"      "+AsusPrice+"      "+AsusCount);
System.out.println(RazerBrand+"            "+RazerSize+"      "+RazerPrice+"      "+RazerCount);
System.out.println(HpBrand+"             "+HpSize+"      "+HpPrice+"      "+HpCount);
System.out.println(MECHREVOBrand+"            "+MECHREVOSize+"      "+MECHREVOPrice+"      "+MECHREVOCount);
System.out.println(DellBrand+"               "+DellSize+"      "+DellPrice+"      "+DellCount);

//计算库存总数,所有商品数量库存求和
int totalCount = MacCount+LenovoCount+AsusCount+RazerCount+HpCount+MECHREVOCount+DellCount;
//计算所有商品库存的总金额,每个商品价格*库存数
double totalMoney = MacCount*MacPrice + LenovoPrice*LenovoCount + AsusCount*AsusPrice
+ RazerPrice*RazerCount + HpPrice*HpCount + MECHREVOPrice*MECHREVOCount + DellPrice*DellCount;
//输出表格底部
System.out.println("总库存数: "+totalCount);
System.out.println("商品库存总金额: "+totalMoney);
}
}