HELP! My java code won't fully run? It gets stuck, and I don't get it. Help me please!

import java.util.Scanner;

public class Course {

public double finalGrade;

public void calculateFinalGrade() {

Scanner in = new Scanner(System.in);

System.out.println("What is the average grade for exams? ");

double examAverage = in.nextDouble();

System.out.println("What is the average grade for quizzes? ");

double quizzesAverage = in.nextDouble();

System.out.println("What is the average grade for homework? ");

double homework = in.nextDouble();

finalGrade = Math.round((examAverage * 0.5) + (quizzesAverage * 0.3) + (homework * 0.2));

}

public static void main(String[] args) {

System.out.println("**** Course 1 ****");

Course myCourse1 = new Course();

myCourse1.calculateFinalGrade();

System.out.println("**** Course 2 ****");

Course myCourse2 = new Course();

myCourse2.calculateFinalGrade();

double totalAverage = (myCourse1.finalGrade + myCourse2.finalGrade) / 2;

System.out.printf("The average grade of the two courses is: %.2f", totalAverage);

//Using conditionals check if the average grade is either an A, B, C, D, or F and display it on the screen.

//This is the criteria you need to use and check:

//A: totalAverage >= 90.

//B: totalAverage >= 80 but

//C: totalAverage >= 70 but

//D: totalAverage >= 60 but

//F: totalAverage

//***ENTER YOUR CODE HERE***

//displaying the letter grade according to the total average

if(totalAverage >= 90){

System.out.println("Your grade is A");

}else if(totalAverage >= 80 && totalAverage

System.out.println("Your grade is B");

}else if(totalAverage >= 70 && totalAverage

System.out.println("Your grade is C");

}else if(totalAverage >= 60 && totalAverage

System.out.println("Your grade is D");

}else if(totalAverage

System.out.println("Your grade is F");

}

}

}

Course.java Problems Javadoc Declaration Console Coverage Properties