####Problem Description####

To model a calulator which accepts add, subtract, multiply, divide, cancel and exit as commands to do basic mathematics.

####Environment Setup#####

1.Install JDK in your operating system(7.0 or above) 2.Install ant in your operating system. If On OSX install it using homebrew with the command brew install ant otherwise download it from the apache ant website.

####Build and Run the specifications of the project####

1.To build the project go to terminal and to the location of the directory. Use the command `ant compile` 
2.To run the specifications of the project, use the command `ant run` or `ant`.