Definition   A COMPUTER is a general purpose machine which can be made to act like a special purpose machine by means of a program.

Definition   A JAVA APPLICATION TEMPLATE is text which is a Java program except for ``slots'' which must be filled.

Definition   A MESSAGE SEND is a construct of the form < object >.   < message > which tells the computer to ``send the message to the object (which knows how to process it)''.

Definition   OBJECT ORIENTED PROGRAMMING is a style of programming which features the modeling of objects in a hierarchical fashion and the sending of messages to appropriately behaving objects.