编程小白

package 哒哒租车系统;
import java.util.Scanner;
public class DadaCarLease {
	
	public static void main(String[] args) {
		Audi6 aodi = new Audi6();
		Mazida6 mzd = new Mazida6();
		Pika6 pk = new Pika6();
		JinLong jl = new JinLong();
		Scanner input = new Scanner(System.in);
	// TODO 自动生成的方法存根
		System.out.println("欢迎使用哒哒租车系统：您是否需要租车？");
		System.out.println("1:是、0:否");
		int num = input.nextInt();
		if(num == 1){
			aodi.man();
			mzd.man();
			pk.man();
			pk.cargo();
			jl.man();
			System.out.println("请输入您要租几种类型的汽车：");
			int much = input.nextInt();
			for(int i = 1;i<=much;i++){
				System.out.println("请输入第"+ i +"辆车的序号：");
				int kinds = input.nextInt();
				System.out.println("请输入需要该类型汽车的数量：");
				int amount = input.nextInt();
				System.out.println("请输入需要租车的天数：");
				int day = input.nextInt();
				switch(kinds){
					case 1:
						aodi.money(day,amount);
					case 2:
						mzd.money(day, amount);
					case 3:
						pk.money(day, amount);
					case 4:
						jl.money(day, amount);
						break;
				}
			}
		}
		if(num == 0){
			System.out.println("谢谢使用！");
		}
		input.close();
		double paymoneyall = aodi.paymoney +mzd.paymoney +pk.paymoney +jl.paymoney;
		System.out.println("租车所需总价为："+paymoneyall);
	}
	
}

        switch(kinds){
                    case 1:
                        aodi.money(day,amount);
                         break;
                    case 2:
                        mzd.money(day, amount);
                         break;
                    case 3:
                        pk.money(day, amount);
                         break;
                    case 4:
                        jl.money(day, amount);
                        break;
                }