COMP204 Homework 11

How to execute?

%java FlyweightCommand

Files:

FlyweightCommand.java
 Use Flyweight pattern to generate a series of buttons.  There are 
 totally three types of buttons: type 0, type 1, and type 2.
 Listen to left-mouse clicks. First click will determine the type of 
 handler, and the second click will determine the type of command.
 FlyweightCommand.java will pass (i, handlerType, commandType) to 
 the pass() function in CommandPasser.java. Here, i is the position 
 of the button most recently clicked in the button list.   

CommandPasser.java
 This file is based on the CommandPasser.java used in class.
 Totally three types of commands and handlers are defined here:
 ComA, ComB, ComC commands and Bob, Fred, Sue handlers. 
 pass() first computes x and y coordinates from the received i.Then 
 pass() will also decide which handler to call and designate which 
 command for the handler to do, based on the information received from 
 FlyweightCommand.java.
 
 ComA(type 0)-- computes x+y
 ComB(type 1)-- computes x^2 + y^2
 ComC(type 2)-- computes x^3 + y^3

 Bob(type 0)-- present the computed result in Decimal format
 Fred(type 1)--present the computed result in Hex format
 Sue(type 2)-- present the computed result in Binary format