汽車租賃公司

描述：假設有一個汽車租賃公司，擁有以下幾種車型：


要求與說明：
1、請先分析車輛的共同特徵並創建出父類交通工具，再分別通過繼承創建轎車和客車類，併爲其各自添加獨有的特徵，最後爲其添加計算租賃費用的方法；
2、再添加新的類（自己取名字），在該類中添加主方法實習租賃業務流程；

交通父類

public class JiaoTong {
	private String leixing;
	private String pingpai;
	private String xinghao;
	private int qian;
	

	public JiaoTong(String leixing,String pingpai,String xinghao) {
		this.leixing = leixing;
		this.pingpai = pingpai;
		this.xinghao = xinghao;
	}

	

	public String getLeixing() {
		return leixing;
	}



	public void setLeixing(String leixing) {
		this.leixing = leixing;
	}



	public String getPingpai() {
		return pingpai;
	}



	public void setPingpai(String pingpai) {
		this.pingpai = pingpai;
	}



	public String getXinghao() {
		return xinghao;
	}

	public void setXinghao(String xinghao) {
		this.xinghao = xinghao;
	}

	public int getQian() {
		return qian;
	}

	public void setQian(int qian) {
		this.qian = qian;
	}
	
	
	
}

轎車類

public class Jiao extends JiaoTong {
	
	
	
	public Jiao(String leixing,String pingpai,String xinghao ) {
		super(  leixing, pingpai, xinghao);
		
	}

	
	public  String qian (int tian) {
		if(getXinghao().equals("550i")) {
			setQian(500);
		}else if(getXinghao().equals("商務艙GL8")) {
			setQian(600);
		}else if(getXinghao().equals("林蔭大道")) {
			setQian(300);
		}
		return "\n客戶您好!:您租的"+getPingpai()+getXinghao()+getLeixing()+"\n您需要支付的費用是："+getQian()*tian;
	}

}

客車類

public class Ke extends JiaoTong{

	private int zuo;


	public Ke(String leixing, String pingpai, String xinghao,int zuo) {
		super(leixing, pingpai, xinghao);
		this.zuo = zuo;
	}
	
	
	public int getZuo() {
		return zuo;
	}


	public void setZuo(int zuo) {
		this.zuo = zuo;
	}


	public String qian (int tian) {
		if(getXinghao().equals("小型")) {
			setQian(800);
		}else if(getXinghao().equals("大型")) {
			setQian(1500);
		}
		return"\n客戶您好!:您租的"+getPingpai()+getXinghao()+getLeixing()+"\n您需要支付的費用是："+getQian()*tian;
}
	}

測試類

import java.util.Scanner;

public class cg {	

	public static void main(String[] args) {
		String chepai = "京BK"+(int)(Math.random()*9000+1000);
		Scanner  jiqi = new Scanner(System.in);
		System.out.println("歡迎您來到汽車租賃公司！");
		System.out.print("請輸入要租賃的天數");
		int tian = jiqi.nextInt();
		System.out.print("請輸入汽車類型（1、轎車		2、客車）");
		int i = jiqi.nextInt();
		String leixing=null;
		String pingpai = null;
		String xinghao=null ;
		if(i==1) {
			leixing = "轎車";
			System.out.print("請輸入汽車品牌（1、寶馬	2、別克）");
			int p = jiqi.nextInt();
			if(p==1) {
				pingpai = "寶馬";
				System.out.print("請輸入汽車型號	1、550i：");
				int x = jiqi.nextInt();
				if(x==1) {
					xinghao="550i";
				}else {
					System.out.println("不好意思，沒有");
					return;
				}
			}else if(p==2) {
				pingpai = "別克";
				System.out.print("請輸入汽車型號	2、商務艙GL8		3、林蔭大道：");
				int x = jiqi.nextInt();
				if(x==2) {
					xinghao="商務艙GL8";
				}else if(x==3) {
					xinghao="林蔭大道";
				}else {
					System.out.println("不好意思，沒有");
					return;
				}
			}
			System.out.println("分配給您的汽車牌號是:"+chepai);
			Jiao j = new Jiao(leixing,pingpai,xinghao);
			System.out.println(j.qian(tian));
		}else if(i==2) {
			leixing = "客車";
			System.out.print("請輸入汽車品牌（1、金盃	2、金龍）");
			int p = jiqi.nextInt();
			if(p==1) {
				pingpai="金盃";
			}else if(p==2) {
				pingpai="金龍";
			}else {
				System.out.println("不好意思，沒有");
				return;
			}
			System.out.print("請輸入汽車座位數：");
			int zuo =jiqi.nextInt();
			if(zuo<=16) {
				xinghao="小型";
			}else if(zuo>16) {
				xinghao="大型";
			}
			System.out.println("分配給您的汽車牌號是:"+chepai);
			Ke k = new Ke(leixing,pingpai,xinghao,zuo);
			System.out.println(k.qian(tian));
		}else {
			System.out.println("不好意思，沒有");
			return;
		}
	
	}
   }

感覺有很多改進的地方，望指點