Java第二季练习题课后练习

package dd;
import java.util.Scanner;
public class Test1 {

/**
 * @param args
 */
public static void main(String[] args) {
    // TODO Auto-generated method stub
    AllCar[] count={new car("奥迪A4",500,4),new car("大众",500,4),new Bus("巴士",600,12),new BigCar("东风",1000,2,10)};
    int sum=0;//载人数
    String name1="",name2="";
    int money=0,day=0,again=0;
    System.out.println("欢迎使用安达租车系统");
    System.out.println("租车请按 1,退出请按0.");
    int input=new Scanner(System.in).nextInt();
    while(input>1){
        System.out.println("输入不符合要求，请您从新输入");
        input=new Scanner(System.in).nextInt();
    }
    if(input==1){
        System.out.println("当前显示是可租车的详细信息：");
        System.out.println("序号\t"+"车名\t"+"载人数\t"+"租金（元/天）\t"+"载货量\t");
        for(int i=0;i<count.length;i++){
            if(count[i] instanceof car){                    System.out.println(i+1+"\t"+count[i].getXinghao()+"\t"+count[i].getZaikeliang()+"\t"+count[i].getZujin()+"\t\t"+count[i].getZaihuoliang());
            }else if(count[i]instanceof Bus){
                System.out.println(i+1+"\t"+count[i].getXinghao()+"\t"+count[i].getZaikeliang()+"\t"+count[i].getZujin()+"\t\t"+count[i].getZaihuoliang());
            }else{                  System.out.println(i+1+"\t"+count[i].getXinghao()+"\t"+count[i].getZaikeliang()+"\t"+count[i].getZujin()+"\t\t"+count[i].getZaihuoliang());
            }               
        }
        System.out.println("请输入您要租车的数量");
        int countInput=new Scanner(System.in).nextInt();
        for(int i=1;i<=countInput;i++){
            System.out.println("请输入您要租的第"+i+"辆车");
            int ci=new Scanner(System.in).nextInt();
            if(count[ci-1] instanceof car){
                 name1=count[ci-1].getXinghao()+"\t"+name1;
                 sum+=count[ci-1].getZaikeliang();
                 money+=count[ci-1].getZujin();
            }else if(count[ci-1] instanceof BigCar){
                name2=count[ci-1].getXinghao()+"\t"+name2;
                again+=count[ci-1].getZaihuoliang();
                sum+=count[ci-1].getZaikeliang();
                money+=count[ci-1].getZujin();
            }else if(count[ci-1] instanceof Bus){
                 name1=count[ci-1].getXinghao()+"\t"+name1;
                 sum+=count[ci-1].getZaikeliang();
                 money+=count[ci-1].getZujin();
            }
        }
        System.out.println("请输入租车天数");
        day=new Scanner(System.in).nextInt();
        if(day>0){
            money=day*money;
        }else{
            System.out.println("最低租一天，请重新输入");
            day=new Scanner(System.in).nextInt();
        }
        System.out.println("您的订单如下：");          
        if("".equals(name1)!=true){
            System.out.println("可载客的有");
            System.out.println(name1);
            System.out.println("载入：4，租金：500");
        }
        if("".equals(name2)!=true){
            System.out.println("可载或的有");
            System.out.println(name2);
            System.out.println("载人：2，租金：1000");
            System.out.println(again+"吨");
        }
        System.out.println(money);
        System.out.println("您是否要继续使用？是的话请按1否的话请按0" );
        input=new Scanner(System.in).nextInt();
        if(input==1){
            main(args);
        }else{
        System.out.println("谢谢使用，欢迎下次光临");
        System.exit(0);
        }
    }else if(input==0){ 
        System.out.println("确定要退出？是的话请按0否的话请按1" );
        input=new Scanner(System.in).nextInt();
        if(input==1){
            main(args);
        }else{
        System.out.println("谢谢使用，欢迎下次光临");
        System.exit(0);
        }
    }

}
}
/
父类
*/
package dd;

public abstract class AllCar {
private String xinghao;
private int zujin;
private int zaikeliang;
private int zaihuoliang;
public String getXinghao() {
return xinghao;
}
public void setXinghao(String xinghao) {
this.xinghao = xinghao;
}
public int getZujin() {
return zujin;
}
public void setZujin(int zujin) {
this.zujin = zujin;
}
public int getZaikeliang() {
return zaikeliang;
}
public void setZaikeliang(int zaikeliang) {
this.zaikeliang = zaikeliang;
}
public int getZaihuoliang() {
return zaihuoliang;
}
public void setZaihuoliang(int zaihuoliang) {
this.zaihuoliang = zaihuoliang;
}
}
/子类/
package dd;
public class car extends AllCar {
public car(String newxinghao,int newzujin,int newzaikeliang){
this.setXinghao(newxinghao);
this.setZaikeliang(newzaikeliang);
this.setZujin(newzujin);
}
}
/子类/
package dd;
public class Bus extends AllCar {
public Bus(String newxinghao,int newzujin,int newzaikeliang) {
// TODO Auto-generated constructor stub
this.setXinghao(newxinghao);
this.setZaikeliang(newzaikeliang);
this.setZujin(newzujin);
}
}
/子类/
package dd;
public class BigCar extends AllCar {
public BigCar(String newxinghao,int newzujin,int newzaikeliang,int newzaihuoliang) {
// TODO Auto-generated constructor stub
this.setXinghao(newxinghao);
this.setZaikeliang(newzaikeliang);
this.setZujin(newzujin);
this.setZaihuoliang(newzaihuoliang);
}
}