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Is this possible to call a specific method (other than main) of a class in a jar file from command line?

pedram bashiri
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Yermek Makulbek
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    You question is very unclear. Please provide more details. The short answer is 'yes'. you can call from the jar everything you can call from main. :) – Mark Bramnik Aug 09 '12 at 09:08
  • You mean you want to run a jar file but invoke a method other than main? – DaveJohnston Aug 09 '12 at 09:11
  • Yeah, invoke class method from jar other than main using command-line – Yermek Makulbek Aug 09 '12 at 09:14
  • Your question is not just unclear but meaningless. You call methods from other methods, not from JAR files. The only method you don't call from another method is `main()`, that being what it's for. – user207421 Aug 09 '12 at 10:20

4 Answers4

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If you are talking about running Java code from the command-line, then no.

You can specify a class name, but not which method to call, that always has to be public static void main(String[] argv).

What you could do is write a helper class (or script like BeanShell) to do that.

java -cp theJar.jar;.  my.helper.WrapperClass theClassToCall theMethodtoCall arg1 arg2
Thilo
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Put the Jar into you class path, instansiate the class in question & call the method?

MadProgrammer
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Yes, all you need to do is to create a class (with a main) which calls the method you want. It doesn't have to be in the jar. It can be a plain .class file provided it and the jar are in the class path.

Peter Lawrey
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No. It's possible to call class(==main method) only.

Alexander Chepurnoy
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