how to open jar file
To open a jar file in Windows, you must have the Java Runtime Environment installed. Alternatively, you can use decompression software, such as an unzip utility, to view the files in the jar archive.To run the file (Java Runtime Environment). To view the file (decompression).n the Open With window, click the Browse button to open the File Explorer window. You need to find the executable file (.exe file) for the software program you want to set as the default program to open the jar file.