有人可以帮我处理这段代码吗，它没有返回我想要的结果

Question

Can anyone compile this code and help me because it's not returning the results I want. I don't know if the return is not working or what, please help me, here is the code:

public class ComputeAverage {
public static void main (String[] args) {

new ComputeAverage().computeAverage(4);
}

 
 public double computeAverage(int how_many)
{ double total_points = 0.0;  // the total of all test scores
  int count = 0;  // the quantity of tests read so far
  while ( count != how_many )
        // at each iteration: total_points == exam_1 + exam_2 + ... + exam_count
        { // ask the user for the next exam score:
          String input = JOptionPane.showInputDialog("Type next exam score:");
          int score = new Integer(input).intValue();
          if (score < 0) {
         JOptionPane.showMessageDialog(null, "Enter a positive numer");
         total_points = total_points - score;
          }
           
          // add it to the total:
          total_points = total_points + score;
          count = count + 1;
          // print a summary of the progress:
          System.out.println("count = " + count + "; total = " + total_points);
         
        }

        // at conclusion: total_points == exam_1 + exam_2 + ... + exam_how_many
   return (total_points / how_many);
 
}
 

 }

Answer 1

You are returning the value back to the main but you are not printing it anywhere. you can use the alert box in swings to show the result.

In main function instead of.,

public static void main (String[] args) {
   new ComputeAverage().computeAverage(4);
}

try:

public static void main (String[] args) {
    JOptionPane.showMessageDialog(null,"Exam score : " + new ComputeAverage().computeAverage(4));
}