Definition   A PROGRAM is a sequence of instructions which performs some action or computes some value.

Definition   A JAVA APPLICATION TEMPLATE is a text which is a Java program except for ``slots'' which must be ``filled''.   These templates contain five textual sections:   General Information,  App Description,  Required Packages,  Application Class,  Demo.

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   A VARIABLE is a name (identifier) which represents some concept and which may denote a value.

Definition   a VARIABLE DECLARATION is the introduction of a variable into a program which specifies the type of value which the variable can denote.