I have a program with the .jar extension. when i try to open it it opens with winrar. i tried to make open with Java binary SE but it shows me a DOS window and it closes. How can i open the program. (it is Java based)
jar files are essentially just zips, that's why most unpacking programs register that extension for themself.
To open it with java, you need to open an CLI Session (Alt+F2,cmd.exe,[Enter]) and execute the following:
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java -jar X:\Path\To\The\File.jar
I'm not sure if Java registers its bin directory for CLI execution, so perhaps you even have to use the whole path for java, too.