扩展类没有正确构造；双重错误，但我不明白为什么

Question

我有一个三个类：两个我不能碰的类——一个初始类和一个显示演示类——第三个是初始类的扩展。当演示编译时，它给了我这个错误：EssayDemo.java:16: error: method setScore in class GradedActivity cannot be applied to given types;  termPaper.setScore(25.0, 18.0, 20.0, 25.0);           ^required: double但是我所有的数据类型都设置为双倍，所以我不明白为什么会发生错误。我也无法更改演示代码。setScore 是在 GradedActivity 中创建的双精度值，但我也无法解决这个问题。作文课上有什么遗漏或不正确的地方？有人可以告诉我错误吗？这是导致问题的essayDemo.java：  /**     This program demonstrates a solution to      the Essay Class programming challenge.  */  public class EssayDemo  {     public static void main(String[] args)     {        // Create an Essay object.        Essay termPaper = new Essay();        // Assign scores to the object.        // Grammer = 25 points, Spelling = 18 points,        // Length = 20 points, and Content = 25 points.        termPaper.setScore(25.0, 18.0, 20.0, 25.0);        // Display the score details.        System.out.println("Term paper:");        System.out.println("Grammar points: " + termPaper.getGrammar());        System.out.println("Spelling points: " + termPaper.getSpelling());        System.out.println("Length points: " + termPaper.getCorrectLength());        System.out.println("Content points: " + termPaper.getContent());        System.out.println("Total points: " + termPaper.getScore());        System.out.println("Grade: " + termPaper.getGrade());     }  }这是gradedActivity.java：  /**     The GradedActivity class stores data about a graded      activity for the Essay Class programming challenge.  */  public class GradedActivity  {     private double score;  // Numeric score     /**        The setScore method sets the score field.        @param s The value to store in score.     */     public void setScore(double s)     {        score = s;     }     /**        The getScore method returns the score.        @return The value stored in the score field.     */     public double getScore()     {        return score;     }