我正在编写一个掷 2 个骰子的程序,并为用户提供重复掷骰的选项(继续 y/n)。此外,应用程序需要识别何时进行某些滚动,例如滚动 7 或 2(蛇眼),我不确定是否需要进入主方法或有自己的类,我迷路了!请帮忙。以下是我对应用程序需要的大纲的概述,我不确定如何对其进行编码。
这是我第一次编写自己的类以在 main 方法中使用,布局如下:
public class DiceRollerApp
{
public static void main(String[] args)
{
}// end main method
}// end App class
class Die
{
public Die()
{} // default to six-sided die
public Die(int sides)
{} // variable number of sides
public void roll()
{} // randomly picks a face value
public int getValue()
{} // returns the face value
}// end class Die
class PairOfDice
{
public PairOfDice()
{} // default to six-sided dice
public PairOfDice(int sides)
{} // variable number of sides
public void roll()
{} // roll both dice
public int getValue1(){} // get value of die1
public int getValue2(){} // get value of die2
public int getSum() {}
// get sum of both dice
}// end class PairOfDice
public class Validator
{
public static String getString(Scanner sc, String prompt)
{
System.out.print(prompt);
String s = sc.next(); // read user entry
sc.nextLine(); // discard any other data entered on the line
return s;
}
public static int getInt(Scanner sc, String prompt)
{
int i = 0;
boolean isValid = false;
while (isValid == false)
{
System.out.print(prompt);
if (sc.hasNextInt())
{
i = sc.nextInt();
isValid = true;
}
else
{
System.out.println("Error! Invalid integer value. Try again.");
}
sc.nextLine(); // discard any other data entered on the line
}
return i;
}
public static int getInt(Scanner sc, String prompt,
int min, int max)
{
int i = 0;
boolean isValid = false;
while (isValid == false)
{
i = getInt(sc, prompt);
if (i <= min)
System.out.println(
"Error! Number must be greater than " + min + ".");
else if (i >= max)
System.out.println(
"Error! Number must be less than " + max + ".");
else
isValid = true;
}
return i;
}
public static double getDouble(Scanner sc, String prompt)
{
double d = 0;
boolean isValid = false;
while (isValid == false)
{
System.out.print(prompt);
if (sc.hasNextDouble())
{
d = sc.nextDouble();
isValid = true;
}
else
{
System.out.println("Error! Invalid decimal value. Try again.");
}
sc.nextLine(); // discard any other data entered on the line
}
return d;
}
public static double getDouble(Scanner sc, String prompt,
double min, double max)
{
double d = 0;
boolean isValid = false;
while (isValid == false)
{
d = getDouble(sc, prompt);
if (d <= min)
System.out.println(
"Error! Number must be greater than " + min + ".");
else if (d >= max)
System.out.println(
"Error! Number must be less than " + max + ".");
else
isValid = true;
}
return d;
}
} // end class Validator
我已经编写了验证器类,但没有在此处发布,其目的是简单地验证问题“继续?y/n:”中的字符串
我不知道如何编写骰子类和一对骰子类,我不知道我是否需要为 DiceRollerApp 设置一个单独的类。