To create the new program duly and then test it and search out all the mistakes, which were done during the action of programming, software development tools can be used. This software is not the application oriented or system software, this is utilized only by the producers. Programming of the process of installation is quite important and should be done by developer very thoroughly. The previous family of software didn't have any problems with installation. The user had to copy the files to any directory of the hard disk. MS-DOS didn't demand any additional actions. The only requirement was the accordance of the hardware. Nowadays any program developer must realize that to make a successful software product he has to use the special utilities called install utilities. That is the class of software that will help to install the files, such as application, drivers, etc. on the PC. Some installers are created for installing the files comprised inside of it, others are considered to be universal and they work reading the content of the pack of the programming software, that needs the installation. Windows OS considerably simplifies the process of installation the software, if the developer of product uses all the advantages of this operation system. Generally, the program is the pack of definite commands for the computers which should be executed in the given time and sequence.



A lot of modern software products can't be included into the one file. There are a lot of different additional files that are used by the main application. Very often they are comprised in some number of files that can be located even on several different data carriers. In these cases the usage of special additional installation software is truly necessary. Installing the software which is compatible with Window OS you don't need to fulfill any acts to adapt it. They can automatically find all the essential resources such as hard disks, audio and video chips, etc. Debugging is the stage of designing the software product which finds, localizes and corrects all the errors. To fulfill the debugging rightly the unique debugging tools should be used. Only the step execution of the application all the mistakes can be searched out. Operation by operation, function by function the application is run and it is halted when reaching definite line of the primary code or if the definite condition is reached. All the constants and variables are checked during the whole period of debugging. Debugging is quite complicated and wearisome action. Using such programming languages as Java truly eases the process of debugging, because it comprises some unique means of exception handling. Origins of the problems will be easily found if the programmer uses such software. In various programming languages as C or assembler errors can cause the unnoticeable troubles. Some of them are injury of the memory or the memory leak. These complexities can be searched out just by means of using different additional debugging programs.