java乘法应用程序

一个名为乘法的应用程序，其main（）方法包含两个双变量。为变量赋值。将这两个变量传递给名为computeMultiplications（）的方法，该方法显示第一个数乘以自身，然后第一个数乘以第二个数。例如，如果数字是2.0和5.0，则该方法应显示类似于“2.0乘以自身为4.0，5.0乘以2.0为10.0”的语句然后再次调用该方法，按相反顺序传递值。将应用程序另存为乘法。使用“java.util.Scanner”类修改Percentages类，以接受来自用户的两个双精度值。将文件另存为乘法2。

问题1示例代码如下：

public class Multiplications {

    public static void main(String[] args) {
        computeMultiplications(2.0, 5.0);
        computeMultiplications(5.0, 2.0);
    }

    public static void computeMultiplications(double a, double b) {
        System.out.println(a + " multiplied by itself is " + a * a + " and " + b + " multiplied by " + a + " is " + a * b);
    }
}

运行结果如下：

问题2示例代码如下：

public class Multiplications2 {

    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        System.out.print("Enter a double >> ");
        double a = scanner.nextDouble();
        System.out.print("Enter another double >> ");
        double b = scanner.nextDouble();
        computeMultiplications(a, b);
        computeMultiplications(b, a);
    }

    public static void computeMultiplications(double a, double b) {
        System.out.println(a + " multiplied by itself is " + a * a + " and " + b + " multiplied by " + a + " is " + a * b);
    }
}

运行结果如下：

如有帮助，请采纳。

njit？

public class 乘法2 {
public static void main(String[] args) {
Percentages pt = new Percentages();
System.out.print("Enter a double >> " );
double number1 = pt.intPutNumber();
System.out.print("Enter another double >> " );
double number2 = pt.intPutNumber();
computeMultiplications(number1,number2);
computeMultiplications(number2,number1);
}
public static void computeMultiplications(Double number1 , Double number2){
System.out.println(number1 +" multiplied by itself is "+ (number1*number1) + " and " +number2
+" multiplied by " +number1 + " is " +(number2 * number1) );
}
}
class Percentages {
private Scanner sc;

public Percentages() {
    sc = new Scanner(System.in);
}

public double intPutNumber() {
    return sc.nextDouble();
}

}