Read input of student's grades and print out in some formats

A demo for Texas Hold'em Poker

Pixels and pictures, with different kinds of pictures and paint methods

Junit test for a3

New implementations of pixels and pictures, including rebuilding the programs in a cleaner framework

Implementations of Observer/Observable Design Pattern

Implementations of MVC design pattern with functions of pixel inspextor, image adjuster and puzzle game

Implementations of extra MVC design pattern more functions of brush paint, blur paint, magnifier, copy pixel and undo/redo.