JAVAOOP面对向对向需要录入两次才能实现效果怎么能解决？

Question

测试：

package Qiche;

import java.util.Scanner;

public class Test {
public static void main(String[] args) {
Scanner iuput=new Scanner(System.in);
System.out.println("欢迎进入高速公路车辆收费系统");
System.out.println("请确认车牌号："+"(1.京Bk2193 2.京Bk6281 3.取消)");
if (iuput.nextInt()==1){
String plateNo="京Bk2193";
BusZ1 busZ1=new BusZ1(400,"京BK2193");
System.out.println("车辆信息");
busZ1.print();
double distance=170;
double fees=distancebusZ1.getRate();
System.out.println("您的车辆需要缴纳"+fees+"元！");
}else if(iuput.nextInt()==2){
String plateNo="京BN6281";
TruckZ2 truckZ2=new TruckZ2(8000,"京Bk6281",6500.0,3);
System.out.println("车辆信息");
truckZ2.print();
double distance=170;
double feef=distancetruckZ2.getRate();
System.out.println("您的车辆需要缴纳"+feef+"元！");
}else {
System.out.println("已退出收费系统");
}
}
}

TruckZ2类：

package Qiche;

import javax.print.attribute.standard.NumberOfDocuments;

public class TruckZ2 extends VehicleF{
private double weight;//最大允许总质量
private int numbersOfAxles;//车轴数
public TruckZ2(int length, String plateNo, double weight, int numbersOfAxles) {
super(length, plateNo);
this.numbersOfAxles=numbersOfAxles;
this.weight=weight;
}
@Override
public void print(){
super.print();
System.out.println("最大允许总质量:"+weight);
System.out.println("车轴数："+numbersOfAxles);
}
@Override
public double getRate(){
double rate=0;
switch (numbersOfAxles){
case 2:
if (super.getLength()<6000&&weight<4500){
rate=0.6;
}else if(super.getLength()>=6000||weight>=4500){
rate=0.9;
}
case 3:
rate=1.02;
break;
case 4:
rate=1.315;
break;
case 5:
case 6:
rate=1.428;
break;
}
return rate;
}

public double getWeight() {
    return weight;
}

public void setWeight(double weight) {
    this.weight = weight;
}

public int getNumbersOfAxles() {
    return numbersOfAxles;
}

public void setNumbersOfAxles(int numbersOfAxles) {
    this.numbersOfAxles = numbersOfAxles;
}

}
实现图

Answer 1