小白，刚学，在cmd中编译时遇到如下报错：





一直找不到哪里有错，jdk也设置了（= =），求大佬解答
这里是源码：
import java.util.Vector;
class Goods{
    String sname;
    String samount;
    String sunitprice;
    public Goods(String name,String amount,String unitprice){
        sname=name;
        samount=amount;
        sunitprice=unitprice;
    }
    public void Display(){
        System.out.println(sname);
    }
}

public class Cart{
    Vector<Goods> v;
    public Cart(){
        v=new Vector<Goods>(50); 
    }

    public void Display(){                          
        int size=v.size();
        for(int i=0;i<size;i++){
            Goods g1=(Goods)v.get(i);
            System.out.println(g1.name+g1.samount+g1.sunitprice);
        }
    }

    public void Add(){                              
        Goods goods=new Goods(name,amount,unitprice);
        v.add(goods);
    }

    public void Delete(char sname){              
        v.remove(sname);
    }

    public double Totalprice(){                     
        double s=0;
        int size=v.size();
        for(int i=0;i<size;i++){
            Goods g1=(Goods)v.get(i);
            s += Double.parseDouble(g1.samount)*Double.parseDouble(g1.sunitprice);
        }
        return s;
     }
}



class Text{
    public void main(String[] args) {       
        Cart cart=new Cart();     
        System.out.println("Please your choice:");
        System.out.println("1.Display my cart");
        System.out.println("2.Add");
        System.out.println("3.Delete");
        System.out.println("4.Checkout");
        System.out.println("5.Exit");
        char ch=(char)System.in.read();
        switch(ch){
            case'1':cart.Display();
                    break;
            case'2':System.out.println("please input the information:\n");
                    cart.Add();                   
                    System.out.println("Added\n");
                    break;
            case'3':System.out.println("what do you want to delete？\n");
                    char sh=(char)System.in.read();
                    cart.Delete(sh);
                    System.out.println("Deleted\n");
                    break;
            case'4':double s=cart.Totalprice();
                    System.out.println("The totalprice is:"+s);
                    break;
            case'5':System.exit(0);
                    break;
        }
    }
}