Java - get command line arguments, OUTSIDE of main?

Question

Is there a way in java to get the command line arguments that were passed to a program outside of the main function?

I'm writing some code that's part of a larger application I don't control, and I'd like to know what the command line args were, without modifying the main function.

Note: I've seen how to get the JVM arguments, and how to get the arguments in main, but would like to get it in other parts of our app, without having them saved in the main function, which I don't control.

Solution

When starting the jvm this way: java -DmyArgument=myValue -jar your.jar you can get the value of myArgument everywhere in your java code with String myArg = System.getProperty("myArgument");

Comments

[JFPicard]

Also check: stackoverflow.com/questions/2541627/…

[Paul]

You could try the property "sun.java.command". It gives you access to the full command that was used to execute the jar (I'll check the docs, wether this is portable between JVM-implementations).

[Paul]

@BradParks update: as the prefix "sun" suggests, this property is most likely a oracle-jre specific system property. I haven't found any resources to verify this, so please handle with care.

[chris]

This also works on windows 7 with the oracle jre.

[Brad Parks]

Thanks... that's helpful, but the args that I'm looking for aren't passed as -D style arguments....