Why .... In class RdaSot: void main(String argv[]) is not defined

[J. Pedone]

Anyone know why this code dies with "In class RdaSot: void main(String
argv[]) is not defined" when it's run using the java command.  It
compiles fine.

import xclasses.
class RdaSot
Properties Public
optionLine = Rexx[]
sayLine = Rexx[]
temp = Rexx
sayLineTemp = Rexx
optionLineTemp = Rexx
method main(argv=rexx) public
        parse argv datfile .
        version()
        sayLine[0] = 0
        optionLine[0] = 0
        if datfile = "" then Do
                say 'No menu file specified - using main.dat'
                datfile = "main.dat"
        end
        loop Forever
                menu = xfile(datfile)          
        -- get data
                menu.read() -- read it
in
                        loop i = 1 to menu.lines --
parse out the options
                        temp = menu.line[i]
                        parse temp sayLineTemp'::'optionLineTemp
                        sayLine[i] = sayLineTemp
                        optionLine[i] = optionLineTemp
                End
                        loop i = 1 to menu.lines --
display the menu
                        say sayLine[i]
                End
                Say "Enter Option: " -- get the
user input
                option = ask
                If option.upper = "QUIT" then leave
                datfile = optionLine[ask] -- figure out the next
dat file
        End
        Exit 0
method version() Private Static
        Say 'RDASOT Simulator Version 3.0'
        Say 'Author: J. Pedone 1998'
        Say 'E-Mail: [hidden email]'
        say 'Press ENTER to continue'
        option = ask
return


Using OS/2 java 1.1.6 (beta) and NetRexx 1.132 15 Apr 1998

TIA

j.


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[J. Pedone]

Mike Cowlishaw <[hidden email]> writes:

>Yes .. Java requires that there be a static 'main' method that takes
>an array of Strings (one word per String, C-style).  NetRexx provides
>that automatically for you only when it also provides the CLASS
>instruction (as in hello.nrx).
>
>Something like this is probably what you want:
>
>    method main(argstrings=3DString[]) static
>      argv=3DRexx(argstrings)
>

I originally did this but got into trouble with my indexed variables. I
declared them as:

-- 4. Assign properties.
        Properties Public
        optionLine = Rexx[]

-- 5. Main method (ignored when loaded by a browser).
        method main(argstrings=String[]) public static
        arg=Rexx(argstrings)

with the keyword STATIC in the main method I received compile errors
saying I could not reference non-static  method OPTIONLINE directly
from a in a static method.  

  So I took STATIC out and changed STRING[] to REXX[]. (if STRING[] was
left in it method main defaulted to STATIC.)  It compiled but obviously
did not work.  
  I did find that if I declare main as everyone suggested, got rid of
properties and rearranged the declarations as:

-- 5. Main method (ignored when loaded by a browser).
        method main(argstrings=String[]) public static
        arg=Rexx(argstrings)
        optionLine = Rexx[]

        parse arg ........

everything worked.  So... I guess this has something to do with the
scope of declared variables ?  Does netrexx recognize such a thing as a
global declaration or do variables always have to be passed between
functions as arguments ?

j.

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