[help] Java Exercise

Question

I'm using the Java: How to program(Deitel ed.6 Chapter3) book and when i try to compile the source code, I get some error message.
public class GradeBookTest
     public static void main( String[] args )
          GradeBook gradeBook1 = new GradeBook("CS101 Introduction to Java Programming");
          GradeBook gradeBook2 = new GradeBook("CS102 DataStructures in Java");
          System.out.println("gradeBook1 course name is: %s\n", gradeBook1.getCourseName());                                         
          System.out.println("gradeBook2 course name is: %s\n ",gradeBook2.getCourseName());                                         
public class GradeBook
     private String courseName;
     public Gradebook(String name)
          courseName = name;
     public void setCourseName( String name )
          courseName = name;
     public String getCourseName()
          return courseName;
     public void displayMessage()
          System.out.printf("Welcome to the grade book for\n%s!\n", getCourseName());
}using the command prompt
I tried
javac GradeBook.java GradeBookTest.java
the error message i get is something like this
>
GradeBook:7:invalid method declaration; return type required
public GradeBook(String name)
^
thank you for your help

Answer 1

constructor for GradeBook must be exactly
public GradeBook(String)
// not Gradebook(String)