GradeBook Class Modifications

I am very new to programming in java and i am completely stuck on this problem i just dont see what i am doing wrong, if i could get some clarification that would be great.

i need this program to display the courses name and instructors name when entered by the person using the program

Code:

---

public class GradeBook


          private String courseName;
        private String instructorName ;
 
  // constructor initializes courseName with String supplied as argument
  public GradeBook( String name, String instructor )
  {
      courseName = name; // initializes courseName
                instructorName = instructor;
  } // end constructor
       
  // method to set the course name
  public void setCourseName( String name )
  {
      courseName = name; // store the course name
  } // end method setCourseName

  // method to retrieve the course name
  public String getCourseName()
  {
      return courseName;
  } // end method getCourseName
       
        public void setInstructorName ( String instructor )
        {
                instructorName = instructor; // store the instructor name
        } // end method setInstructorName
       
        // method to retrieve the instructor name
        public String getInstructorName()
        {
                return instructorName;
        } // end method getIntructorName
       
        //display a welcome message to the GradeBook User
        public void displayMessage()
        {
                // this statement calls getCourseName to get the
                // name of the course this GradeBook represents
                System.out.printf ( "Welcome to the Grade Book for\n%s!\n", getCourseName());
        } // end method displayMessage
}//end class GradeBook

---

Code:

---

public class GradeBookTest
{
// main method begins program execution
public static void main ( String args[] )
{

String courseName;
String instructorName;

Scanner input = new Scanner(System.in);

                GradeBook gradeBook1 = new GradeBook(
                courseName , instructorName );
                GradeBook gradeBook2 = new GradeBook(
                courseName , instructorName );
                       
                // display initial value of courseName for each Gradebook
                System.out.printf ( "gradeBook1 course name is: %s\n",
                        gradeBook.getcourseName() );
                System.out.printf ( "gradeBook2 course name is: %s\n",
                        gradeBook2.getcourseName() );
        } // end main
} // end class GradeBookTest

---

Code:

---

GradeBookTest.java:26: cannot find symbol
symbol  : variable gradeBook
location: class GradeBookTest
                        gradeBook.getcourseName() );
                        ^
GradeBookTest.java:28: cannot find symbol
symbol  : method getcourseName()
location: class GradeBook
                        gradeBook2.getcourseName() );
                                  ^
2 errors

---

Java is case sensitive, getcourseName() is declared as having a capital C. Also, you forgot a 1 in gradeBook.getcourseName().

The first error is caused because you call

Code:

---

gradeBook.getCourseName()

---

but you declare 2 gradebooks

Code:

---

gradeBook1 = new gradeBook(args);
gradeBook2 = new gradeBook(args);

---