projects done in the course"Distributed Software Architecture"
a student & course system based on event bus arch.
- clone the repository/download files
- change the working directory to the directory that contains all of the system’s source files
- type the following cmd:
javac *.java
java SystemMain Students.txt Courses.txt• SystemMain.java : Has the main() method and creates the system structure by instantiating all
of the components and starting the ClientInput component. (initialize the whole project)
• ClientInput.java: Presents the main menu and broadcasts service requests to the other
components based on user input. (receive the input & show result)
• ClientOutput.java: Subscribes to and receives “show” notification. The contents of these
notifications are displayed oto the user console.
• DataBase.java: Provides access to the student and course lists. Also provides methods for
student registration. (provides data access)
• EventBus.java: The implicit invocation architecture is implemented using Java Observer/
Observable classes. This class provides the basis for the components to be observers and to
announce notifications. (define event)
• CommandEventHandler.java: Provides services to list student/course information and to register a
student for a course. (an interface)
• Handler.java: Implementation of a component that handles a menu event.
• Student.java: Class used to represent a Student in the system.
• Course.java: Class used to represent a Course in the system.
• Courses.txt: Text file that contains list of courses.
• Students.txt: Text file that contains list of students.