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Editorial Team
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Asked: 2026-05-15T15:12:10+00:00

I’d like to add custom command-line options to my Java program. Here’s an example:

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I’d like to add custom command-line options to my Java program. Here’s an example:

java -cp my.jar package.Main -i input.data -o output.data

How can I achieve this. Currently I only get

JVMJ9VM007E Command-line option unrecognised: -i

Edit: The output of java -version

java version "1.5.0"
Java(TM) 2 Runtime Environment, Standard Edition (build pap64dev-20080315 (SR7))
IBM J9 VM (build 2.3, J2RE 1.5.0 IBM J9 2.3 AIX ppc64-64 j9vmap6423-20080315 (JIT enabled)
J9VM - 20080314_17962_BHdSMr
JIT  - 20080130_0718ifx2_r8
GC   - 200802_08)
JCL  - 20080314
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1 Answer

  1. Editorial Team

    I guess I’ve found the solution: The problem was that I ran a normal .jar file as if it was an executable .jar with the -jar argument. This seemed to cause the annoyance.

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