12. a. Create a class named Student that has fields for an ID number, number of credit hours earned, and number of points earned. (For example, many schools compute grade point averages based on a scale of 4, so a three-credit-hour class in which a student earns an A is worth 12 points.) Include methods to assign values to all fields. A Student also has a field for grade point average. Include a method to compute the grade point average field by dividing points by credit hours earned. Write methods to display the values in each Student field. Save this class as Student.java. b. Write a class named ShowStudent that instantiates a Student object from the class you created and assign values to its fields. Compute the Student grade point average, and then display all the values associated with the Student. Save the application as ShowStudent.java. Create a constructor for the Student class you created. The constructor should initialize each Student's ID number to 9999, his or her points earned to 12, and credit hours to 3 (resulting in a grade point average of 4.0). Write a program that demonstrates that the constructor works by instantiating an object and displaying the initial values. Save the application as ShowStudent2.java. C. ich VON 02.200.209 CHAPTER 3, EXERCISE 12A OUTPUT: C. Command Prompt 0 D:\JavaBatchFile>javac Student.java D:\JavaBatchFile). CHAPTER 3, EXERCISE 12B OUTPUT: C. Command Prompt D:\JavaBatchFile>javac Student.java D:\JavaBatchFile>javac ShowStudent.java D:\JavaBatchFile>java ShowStudent ID Number is: 234 Points Earned: 47 Credit Hours: 15 The grade point average is 3.1333333333333333 D:\JavaBatchFile). CHAPTER 3, EXERCISE 12C OUTPUT: GK Command Prompt x D:\JavaBatchFile>javac ShowStudent2.java D:\JavaBatchFile>java ShowStudent2 ID Number is: 9999 Points Earned: 12 Credit Hours : 3 The grade point average is 4.0 D:\JavaBatchFile>