package com.trainsports;
public class trains {
public int people = 0;
public trains(){
System.out.print("运输方式选择：");
}
/*public int getPeople() {
return people;
}
public void setPeople(int people) {
this.people = people;
}*/
public void way(){
System.out.println("各种运输方式！");
}
}
package com.trainsports;
public class airplane extends trains {
//trains air = new airplane();
String way2 = "飞机";
public airplane(){
System.out.println(way2);
System.out.println("飞机运输方式！");
people = 200;
System.out.println("运输人数："+people);
}
public void way(){
System.out.println("在天上飞行运输！");
}
}
package com.trainsports;
public class bike extends trains {
//trains b = new bike();
public bike(){
System.out.println("自行车赶路方式！");
people = 2;
System.out.println("运输人数："+people);
}
public void way(){
System.out.println("人力蹬车运输方式！");
}
}
package com.trainsports;
public class boat extends trains {
//trains bo = new boat();
public boat(){
System.out.println("轮船运输方式！");
people=500;
System.out.println("运输人数："+people);
}
public void way(){
System.out.println("水中运输方方式！");
}
}
package com.trainsports;
public class bus extends trains {
//trains b= new bus();
public bus(){
System.out.println("公交运输方式");
people = 40;
System.out.println("运输人数："+people);
}
public void way(){
System.out.println("公路运输方式！");
}
}
package com.trainsports;
import java.util.Scanner;
public class Initial {
public static void main(String[] args) {
// TODO Auto-generated method stub
Scanner input = new Scanner(System.in);
Initial in = new Initial();
while(true){
System.out.println("请选择你要查询的交通工具：");
System.out.println("1、自行车 2、公交车 3、轮船 4、飞机 5、退出");
int temp = input.nextInt();
if(temp == 5)
{
System.out.print("退出程序");
break;
}
else{
in.chiose(temp);
}
}
input.close();
}
public void chiose(int temp){
switch(temp){
case 1:
trains bike = new bike();
bike.way();
break;
case 2:
trains bus = new bus();
bus.way();
break;
case 3:
trains boat = new boat();
boat.way();
break;
case 4:
trains airplane = new airplane();
airplane.way();
break;
default:
System.out.println("输入出错，请重新输入：");
break;
}
}
}
大概就这么多了 字类不能继承父类的私有成员变量 但是我要改变他 使用setter时 建立一个父类的对象就会进入死循环啊 怎么做啊
