sjm.imperative
Class Command

java.lang.Object
  |
  +--sjm.imperative.Command

Direct Known Subclasses:

AddFunctionCommand, AssignFunctionCommand, AssignmentCommand, CommandSequence, ForCommand, IfCommand, NullCommand, PrintlnCommand, ReadCommand, WhileCommand

public abstract class Command

extends java.lang.Object

This abstract class represents a hierarchy of classes that encapsulate commands. A command object is a request that is dormant until a caller asks it to execute.

Subclasses typically encapsulate some primary function, and allow for parameters that tailor a command to a purpose. All subclasses must implement an execute command, which is abstract here.

Constructor Summary

Command()

Method Summary

abstract void

execute() Perform the request encapsulated in this command.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

Command

public Command()

Method Detail

execute

public abstract void execute()

Perform the request encapsulated in this command.