JAD file format is used to define JAVA ME applications which are compiled as JAR files. JAD file format is generally used to package those JAVA games or applications which are developed for mobile JAVA devices like mobile phones.
These files are categorized as descriptor files and are used to describe MIDlet. MIDlet is a type of JAVA application which uses MIDP (Mobile Information Device Profile) for JAVA ME environment. Generally these MIDlet applications are mostly mobile games which are developed on JAVA environment. JAD file is used to deploy MIDlet application. JAD file is downloaded by the user to install MIDlet.
In addition to the problem described above, i.e. the lack of the appropriate application to support the .JAD file, there may be several reasons that cause problems with opening and operation of the data format:
A quite common problem is the lack of application in the appropriate version. Even if you have an application, with the help of which you should open the .JAD file, you may have a problem with it because of its version. Perhaps in previous versions the application has not yet supported the .JAD file, so download the update and check again.
If you have already installed the appropriate application, and it is the correct version, the file may not open correctly, because the operating system does not have information that this program supports the file. So you need to "show" which program the computer should use. To do this:
It also happens that the file you want to open is corrupt and therefore there is no such possibility. In this situation, you should find its different version, or ask a person from whom you got, to send it again.