如何将程序编程更改为OOP ..？ （JAVA）

Question

我是一名初学Java程序员，并且已经花了很长时间。我需要将下面的程序转换为OOP格式，并且无法在没有错误的情况下进行编译。我想我会发布工作的非格式化程序，而不是我失败和不稳定的尝试。如果有人可以将以下程序转换为OOP，那将非常感激。请原谅任何低效率或邋iness，因为我是新手。

感谢您的帮助：）

import java.util.Scanner; 公共课EstimatePi {

//Public static variables used because they are used throughout the different methods
public static Scanner in = new Scanner(System.in);

//2 * Math.random - 1 is used to guarentee that the max value is gonna be 1 and min is gonna be -1
public static double x = (2 * Math.random() - 1);
public static double y = (2 * Math.random() - 1);
public static double radius = 1.0;
public static double numOnBoard;
public static double totalPi;
public static int numThrows;
public static int trials;

public static int hits(double x, double y, int trials) {
    numOnBoard = 0;

    for (int i = 1; i < trials; i++) {

        //Same Algorithm as above
        x = (2 * Math.random() - 1);
        y = (2 * Math.random() - 1);

        //If x2 + y2 <= r2 then its a hit on the board.
        if ((Math.pow(x, 2) + Math.pow(y, 2)) <= (Math.pow(radius, 2))) {
            numOnBoard++;
        }

    }

    //returns the num of hits on the board
    return (int)numOnBoard;
}

//Method to calculate pi, and store that data in an array
public static double[] piColumn( double numOnBoard, double numThrows)
{   double []piColumn = new double[trials];
    for(int i = 0; i < piColumn.length;i++)
    {
        //Formula to calculate the pi
        piColumn[i] = (4 * (numOnBoard) / numThrows);
    }
    return piColumn;
}

public static void main (String [ ] args)
{

    //The number of darts thrown per trial is asked
    System.out.println("How many times should the dart be thrown per trial?");
    numThrows = in.nextInt();     
    System.out.println();

    //The number of trials is asked
    System.out.println("How many trials do you want to simulate?");
    trials = in.nextInt();
    System.out.println();

    //forloop to iterate the internal code while counter < trials
    for (int counter = 0; counter < trials; counter++) {

        //number of hits methods is declared as a integer
        int hits = hits(x,y,numThrows);

        //the calculation of pi is declared as a double
        double []estimatedPi = piColumn(hits,numThrows);

        //total = total + the estimatation of pi
        for(int i = 0; i < trials; i++){
            totalPi += estimatedPi[i];
        }

        //Formatting the output
        System.out.printf("%s %d %s %s", "Trial [",(counter + 1),"]", ": pi = ");
        System.out.printf("%1.5f\n",estimatedPi[counter]);
    }

    //The average pi is the total pi's divided by the number of trials the user enters
    double averagePi = (totalPi / trials / trials);

    System.out.printf("%s %1.5f\n", "Estimation of pi = ",averagePi);

}

}

Answer 1

我受到这个问题的启发，写了一部漫画project。我试图使代码尽可能面向对象，但留在＆＃34;域＆＃34;并且不要使用大量的设计模式，框架等。另外，我试图遵循测试优先的意识形态。您可以查看commits history并查看工作是如何逐步进行的。

谢谢你，javacoder，体验和乐趣。