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Java Tutorial » Class Definition » Defining Class  
5.1.7.Class declaration with a method that has a parameterPrevious/Next
public class MainClass
{
   public static void mainString args[] )
   
      GradeBook myGradeBook = new GradeBook()

      String courseName = "Java ";
      myGradeBook.displayMessagecourseName );
   }

}

class GradeBook
{
   public void displayMessageString courseName )
   {
      System.out.printf"Welcome to the grade book for\n%s!\n"
         courseName );
   }

}
Welcome to the grade book for
Java !
5.1.Defining Class
5.1.1. What Is a Java Class?
5.1.2. Fields
5.1.3. Defining Classes: A class has fields and methods
5.1.4. Creating Objects of a Class
5.1.5. Checking whether the object referenced was of type String
5.1.6. Class declaration with one method
5.1.7. Class declaration with a method that has a parameter
5.1.8. Class that contains a String instance variable and methods to set and get its value
5.1.9. Class with a constructor to initialize instance variables
5.1.10. Specifying initial values in a class definition