How opening .jar file

[keko1963]

Hello, i try to open .jar file in Multi commander to start a program. With Total commander i dont have that problem, start program any time without any problem. If i try the same program in Multi commander dont start program, Multi commander open file and i see 2 folders, but in that 2 folders is not a exe file to strat program.

[AlanJB]

Normally, .jar files do not contain .exe executable files.  They usually contain Java class files (among others).

[Mathias (Author)]

In file type editor.  under Run/Open tab  associate .jar with java

[keko1963]

Hello, thank for all answers. I try but not work, still open new folder. I open Configuration, than File type setup and than Launchers (Run/Open). Write down all parameters , not work.