求这段c语言的代码换成java的代码

#include #define P 3.1415927#define toFeet(x) x/12.0#define toMiles(x) x/5280.0int main(){ double diameter;//直径 int revolutions;//转数 double time;//香蕉 double s; int count=1; while(scanf("%lf%d%lf",&diameter,&revolutions,&time),revolutions){ time/=3600; diameter/=63360; s=diameter*P*revolutions; printf("Trip #%d: %.2lf %.2lf\n",count++,s,s/time); }}

稍有改动

 import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        final double PI = 3.1415927;
        Scanner scan = new Scanner(System.in);//标准输入流
        int a = scan.nextInt();//首先输入有多少组数据
        double x[][] = new double[a][3];//用二维数组存放数据 直径 转数 时间 依次输入就可以 空格 回车都可以分隔
        for (int i = 0; i < x.length; i++) {
            for (int j = 0; j < x[i].length; j++) {
                x[i][j]=scan.nextLong();
            }
        }
        scan.close();//关闭标准输入流
        int count = 1;
        for (int i = 0; i < x.length; i++) {
            x[i][2] /= 3600;
            x[i][0] /= 63360;
            double s = x[i][0]*PI*x[i][1];
            System.out.println(String.format("Trip #%d: %.21f %.21f", count++,s,s/x[i][2]));
        }
        }
    public static double toFeet(double x){//进行换算的方法 传入x返回换算的值 调用方法toFeet(x);
        return x/12.0;
    }
    public static double toMiles(double x){
        return x/5280.0;
    }
}

运行结果截图：

Scanner scan=new Scanner(System.in);
String str=scan.next();
直接接收控制台传过来的数据就行了