java - java中两个骰子的总和

Question

所以我有一个掷骰子程序，到目前为止似乎可以工作，但我无法弄清楚的唯一问题是如何对掷骰子的输出求和。它会再次掷骰子，同时对前一次掷骰子进行求和。

这是我开始的 Die 类

public class Die{   //only thing changed was removing implementation of the interface

private int noFaces;

public Die() {
    noFaces = 6;
}

public int getNoFaces() {       //getter
    return noFaces;
}

public Die(int noFaces) {       //setter, sets new value according to passed parameter
    this.noFaces = noFaces;
}

public int roll() {             //generates random number+1 within specified "noFaces" range
    return (int) (Math.random() * noFaces + 1);
}

public void printRoll() {       //goes to above method roll() and prints the returned value
    System.out.println(roll());
}

}

并将一个骰子变成一对骰子，这就是我遇到求和问题的地方

public class PairOfDice {

private Die d1, d2;

public PairOfDice() {       //initializes 2 die objects
    d1 = new Die();
    d2 = new Die();
}

public PairOfDice(int noFaces) {    //sets the dice equally
    d1 = new Die(noFaces);
    d2 = new Die(noFaces);
}   

public PairOfDice(int noFaces1, int noFaces2) { //sets dice separately
    d1 = new Die(noFaces1);
    d2 = new Die(noFaces2);
}

public void printRoll() {   //prints rolls
    System.out.println("Die 1 returned: " + d1.roll());
    System.out.println("Die 2 returned: " + d2.roll());

}

public void printRollSum(){     //print sum of both rolls
    System.out.println("Sum of both dice rolls are: " + (d1.roll() + d2.roll()));
}

}

以及我获得输出的地方，RollingDice

public class RollingDice {

public static void main(String[] args) {

    PairOfDice pairOne = new PairOfDice();
    pairOne.printRollSum();
    System.out.println();

    PairOfDice pairTwo = new PairOfDice(10);
    pairTwo.printRoll();
    pairTwo.printRollSum();
    System.out.println();

    PairOfDice pairThree = new PairOfDice(100, 3);
    pairThree.printRoll();
    pairThree.printRollSum();

}

}

感谢对我的程序或评论的所有帮助，我仍在学习。谢谢!

Answer 1

您得到的是两个骰子的总和，但您每次都在掷骰子。 printRoll() 滚动并显示值，然后 printRollSum() 再次滚动它们，为您提供不同的值。