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9天前关门了。
改进这个问题
我正在编写一个函数，它将另一个类中构造的对象用作变量。这是代码，我在这里得到了错误“commondenominator（fraction，fraction）”两个错误的标识符预期在分数和分数。

public class MyMath {

 public static int commonDenominator(Fraction,Fraction){ 

       int d1 = getDenominator();                              
       int d2 = getDenominator();
       if (d1%d2==0){
          return d1; 
        } else if (d2%d1=0){
          return d2;
        } else {
         return d1*d2 ; 
        } 
  } 
}

另一方面，这是分数类的代码：

public class Fraction {

    // The fields of this Fraction
    private int numerator;
    private int denominator;

    /**Constructs a fraction.
     *  The newly constructed fraction is reduced.
     *  For example, given 6 and 9, constructs the fraction 2/3.
     *  If the denominator is negative, converts the signs of both the numerator and the denominator.
     *  For example, 2/-3 becomes -2/3, and -2/-3 becomes 2/3.     
     *  @param numerator   can be signed
     *  @param denominator can be signed
     */
    public Fraction (int numerator, int denominator) {
        // Handles the signs of the numerator and denominator
        if (denominator < 0) {
            numerator = numerator * -1;
            denominator = denominator * -1;
        }
        // Initializes the object's fields
        this.numerator = numerator;
        this.denominator = denominator;
        // Divides the numerator and denominator by their greatest common divisor

    }

    /**Constructs a random fraction.
     *  The denominator is a random positive random number which is less than limit, and
     *  the numerator is a random positive random number which is less than the denominator.
     *  @param limit must be greater or equal to 1
     */
    public Fraction(int limit) {
        // Put your code here
        int denominator1 = (int)(Math.random()*(limit+1)); 
        int numerator1 = (int)(Math.random()*(denominator + 1)); 
        this.numerator = numerator1;
        this.denominator = denominator1;
    }

    /**Returns the numerator of this fraction.
     *  @return the numerator of this fraction
     */
    public int getNumerator() {
        return numerator;
    }

    /**Returns the denominator of this fraction.
     *  @return the denominator of this fraction
     */
    public int getDenominator() {
        return denominator;
    }
}