/* Craig Persiko
   CourseTest.java

   Defines and tests a class called Course which
   holds information about a college course.
*/

class Course
{
  // declare instance variables:
  private String dept, number, name;

  // constructor definitions:
  public Course()
  {
    // Empty constructor just to allow Course to be
    // constructed with null strings for its
    // instance variables.
  }

  // constructor to set values for instance variables
  public Course(String d, String num, String name)
  {
    dept = d;
    setNumber(num); // mutator method call, to check length
    this.name = name;
  }

  // other method definitions:
  public void setDept(String d)
  {
    dept = d;
  }

  // mutator for Course Number.
  // Enforces rule that it must be 5 characters or less.
  public void setNumber(String n)
  {
    if(n.length() <= 5)
      number = n;
    else // too long: store first 5 chars only.
      number = n.substring(0, 5);
  }

  public void setName(String n)
  {
    name = n;
  }

  public String getDept()
  {
    return dept;
  }

  public String getNumber()
  {
    return number;
  }

  public String getName()
  {
    return name;
  }

  public void printCourse()
  {
    System.out.print(dept + number);
    System.out.println(": " + name);
  }

} // end of class Course definition


class CourseTest
{
  public static void main(String[] args)
  {
    String desc;
    Course cp110b = new Course();
    Course cp111b = new Course("CS", "111B", "Programming Fundamentals I, Java");

    cp110b.setDept("CS");
    cp110b.setNumber("110B with too long a name");
    cp110b.setName("Programming Fundamentals I, C++");

    desc = cp111b.getDept() + cp111b.getNumber() + cp111b.getName();
    System.out.println(desc);

    cp110b.printCourse();
  }
}

/* Output:

$ javac CourseTest.java
$ ls Course*
Course.class      CourseTest.class  CourseTest.java
$ java CourseTest
CS111BProgramming Fundamentals I, Java
CS110B : Programming Fundamentals I, C++
$

*/