Abstract

Today most programming courses for beginners use an object-oriented language. This has led to many new learning tools, theories and methods for teaching objectorientation. One such new tool is BlueJ which is developed to teach Java and object-orientation for beginners. BlueJ does not have any support for drawing sequence diagrams and this thesis describes the development of an editor for sequence diagrams. The editor is developed as a plugin for BlueJ and designed to be used by beginners. This paper describes the design and implementation of the editor and it contains a user manual for the editor.