java实现超市编号购物小程序

String用来定义商品名称
Prise定义各个商品的价格
本人是小白，只能用这种最简单的方法，各位大佬如有更好的方法可以交流学习。

import java.util.Scanner; 
 public class shops {
    public static void main(String[] args) {
        Scanner sc=new Scanner(System.in);
            String book="书本";
            String Price="价格";
            int bookPrise=12;
            String Pen="铅笔";
            int penPrise=1;
            String Xp="橡皮";
            int xpPrise=2;
            String Cola="可乐";
            int colaPrise=3;
            String foods="零食";
            int foodsPrise=5;
            int amount=20;

        System.out.println("商品名称"+'\t'+'\t'+ '\t' +Price+'\t'+'\n'+"1."+book+'\t'+'\t'+bookPrise+"元"+'\t'+'\n'
                +"2."+Pen+'\t'+'\t'+penPrise+"元"+'\t'+'\n'+"3."+Xp+'\t'+'\t'+xpPrise+"元"+'\t'+'\n'+"4."+Cola+'\t'+'\t'+colaPrise+"元"
                +'\n'+"5."+foods+'\t'+'\t'+foodsPrise+"元")；
       System.out.println("请输入商品序列号：");
           int one=sc.nextInt();
            int[] ont={1,2,3,4,5};
            for(int i=1;i< args.length;i++)
            {
                System.out.println(ont[i]);
    
            }
    
            int n=1;//存储数量
           do
             {
                if (one==ont[1]) {
                    System.out.print("此商品为：" + book + '\t' + "价格为：" + bookPrise+'元'+'\n'+"找零:"+(amount-bookPrise));
                    if((amount-bookPrise)>=1)
                    {
                        System.out.println('\n'+"你还可以购买："+Pen+(amount-bookPrise)/penPrise+"个"+'\n'+"剩余："+
                                ((amount-bookPrise)-((amount-bookPrise)/penPrise))+
                                "元");
    
    
                        //System.out.print("你还可以购买："+Cola+Xp+foods+Pen);
                    }
    
                    break;
    
                } else if (one==ont[2]) {
    
    
                    System.out.print("此商品为：" + Pen + '\t' + "价格为：" + penPrise+'元');
    
                    System.out.println('\n'+"剩余金额："+(amount-penPrise)+'\n'+"你还可以购买："+Xp+((amount-penPrise)/xpPrise)+'个'+
                            '\n'+"剩余："+((amount-penPrise)-((amount-penPrise)/xpPrise)));

                System.out.println("请输入商品序列号：");

                int s=sc.nextInt();


                if(amount-penPrise<=12)
                {
                    System.out.println("你还可以购买所有商品");

                }
                int t=sc.nextInt();
            }

            else if (one==ont[3]) {

                System.out.print("此商品为：" + Xp + '\t' + "价格为：" + xpPrise+'元');
                System.out.println('\n'+"剩余金额："+(amount-xpPrise)+'\n'+"你还可以购买："+foods+((amount-xpPrise)/foodsPrise)+'个'
                +'\n'+"剩余："+((amount-xpPrise)-(amount-xpPrise)/foodsPrise));

                break;


            } else if (one==ont[4]) {
                System.out.print("此商品为：" + Cola + '\t' + "价格为：" + colaPrise+'元');
                System.out.println('\n'+"剩余金额："+(amount-colaPrise)+'\n'+"你还可以购买："+Xp+((amount-colaPrise)/colaPrise)+'个');

                break;
            }
            else if (one==ont[5]){
                System.out.print("此商品为：" + foods + '\t' + "价格为：" + foodsPrise+'元');

                System.out.println('\n'+"剩余金额："+(amount-foodsPrise)+'\n'+"你还可以购买："+Pen+((amount-foodsPrise)/penPrise)+'个');

                break;
            }
            else
            {

                System.out.println("序列号无效，请重新选择商品");
            }
        } while(one<=5);

    }
}