用JAVA为某研究所编写一个通用程序，用来计算每一种交通工具运行1000公里所需的时间，已知每种交通工具的

ComputeTime类用来算时间的：1000/速度（参数传入）

Plane类 ABC3个属性 还有一个 速度=A+B+C

Car007类 ABC3属性 速度=A*B/C

Common接口我觉得没必要如果有必要的话 那就get A B C 吧。。。

而那些工具类只用写具体的算法就行了。。。

本人菜鸟。。。个人意见。。。不要误人。。。

==================Common.java==================================

package baidu

public interface Common {

int DISTANCE = 1000

float computeTime(int a,int b,int c)

}

========================Plane.java===============================

package baidu

public class Plane implements Common {

public float computeTime(int a, int b, int c) {

// TODO Auto-generated method stub

float speed = a + b + c

return DISTANCE/speed

}

}

===========================Car007.java=============================

package baidu

public class Car007 implements Common {

public float computeTime(int a, int b, int c) {

// TODO Auto-generated method stub

float speed = a*b/(float)c

return DISTANCE/speed

}

}

============================ComputeTime.java========================

package baidu

public class ComputeTime {

/**

* @param args

*/

static String packageName = "baidu"

static String className

static int a,b,c

public static void main(String[] args) {

// TODO Auto-generated method stub

try{

className = args[0]

a = Integer.parseInt(args[1])

b = Integer.parseInt(args[2])

c = Integer.parseInt(args[3])

}catch(Exception e){

System.out.println("请输入正确的参数:className a b c")

System.exit(0)

}

Common common = null

try {

common = (Common) Class.forName(packageName + "." + className).newInstance()

} catch (Exception e) {

// TODO Auto-generated catch block

System.out.println("请检查输入的className")

e.printStackTrace()

System.exit(0)

}

System.out.println(className + "所需要的时间是:" + common.computeTime(a, b, c))

}

}

//ComputeTime.java

public class ComputeTime {

public static void main(String[] args) throws Exception{

for(int i=0i<args.lengthi++){

System.out.println(i+"-----"+args[i])

}

if(args.length!=4){

System.out.println("参数个数不对,请重新输入!")

return

}

Common com =(Common)Class.forName(args[0]).newInstance()

int a = Integer.parseInt(args[1])

int b = Integer.parseInt(args[2])

int c = Integer.parseInt(args[3])

double[] kk = com.getTime(a, b, c)

System.out.println(args[0]+"的速度为"+kk[0]+"公里/小时,走1000公里需要"+kk[1]+"小时")

}

}

//Common.java

public interface Common {

public double[] getTime(int A,int B,int C)

}

//Ship.java

public class Ship implements Common{

public double[] getTime(int A, int B, int C) {

double suDu = A*B*C

double shiJian = 1000/suDu

return new double[]{suDu,shiJian}

}

}

//Plane.java

public class Plane implements Common{

public double[] getTime(int A, int B, int C) {

double suDu = A+B+C

double shiJian = 1000/suDu

return new double[]{suDu,shiJian}

}

}

//..........交通工具类

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