Calling methods from Command prompt

Question

Hi,
OK this may seem crazy:).
Is it possible to call a method from the command prompt directly?.
For eg. I have a class UFOSeeker that has a static method getPosinSky.
Is it possible to just call this method directly form the cmd prompt?, something like this
[neo@zeno ~]java UFOSeeker.getPosinSky()
The . is wrong i know, but is there a way?.
Reason for asking this, just bored and wondering whether this would be possible?.
TIA,
kris

Answer 1

You could do it via another class and use reflection.
For example:
public class CallStaticMethod
    public static void main(String[] args)
        String className = args[0].substring(0, args[0].lastIndexOf('.'));
        String methodName = args[0].substring(args[0].lastIndexOf('.')+1, args[0].indexOf('('));
        try
            Class clazz = Class.forName(className);
            Method meth = clazz.getMethod(methodName, new Class[0]);
            meth.invoke(null, new Object[0]);
        catch ( Exception e )
            e.printStackTrace();
}You would then run:
java CallStaticMethod package.Class.method()
or in your example
java CallStaticMethod UFOSeeker.getPosinSky()
The code above does not do anything about passing in parameters or getting return types. If you are really bored you could add it in.