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Thread: How would you run jar file with a java program?

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    Default How would you run jar file with a java program?

    I tried the Runtime.getRuntime() and the Process exec() method, but it said that the jar wasn't a valid Win 32 Application. So what should I do instead of going the route like I would with an .exe?


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    Default Re: How would you run jar file with a java program?

    The executable you have to run is java (or javaw.exe) passing it the -jar and any other arguments including the name of the jar file.

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    javapenguin (May 31st, 2012)

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    Default Re: How would you run jar file with a java program?

    Say I had a file called file.jar, how would I pass that using the Runtime.getRuntime() and Process exec() method then?

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    Default Re: How would you run jar file with a java program?

    Runtime.exec("java -jar myjarfile.jar")

    But unless you don't know anything about the internals aspects of the jar (and making the assumption that the JRE is on the PATH of the client machine - which in many cases it is not), you should be able to add this to your classpath and run it internal to your application.

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    javapenguin (May 31st, 2012)

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    Default Re: How would you run jar file with a java program?

    How would you know if the JRE is on the client machine or not? And if it's not, how do you get it there?

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