Java BASIC Programming

In the process of writing a calculator, although encountered a lot of difficulties, but also spent a lot of time, but through a variety of methods to overcome some of the programming difficulties:

(1) Find API documentation, use JAV AWT and swing inside the class to draw the computer interface

(2) then to each button binding monitor, the method of monitoring See the Event object class. Difficulties

(3) The final various implementation methods are described in the math function

(4) It is recommended that all the numbers are bigdecimal types, but that the class does not provide methods and can be converted to double to calculate

Java BASIC Programming