Re: Call a Java program from RPG or CL

Kelly Jones wrote:

We have a situation where we need to call a Java program, have it do

"it's thing", then pass a return code back to the calling program.  The
main point of the return code is to inform the calling program whether
everything went OK.  If the Java program bombs, we need to inform the
caller that something bad happened and stop.

Can someone provide an example how to do this?

class jcombine
{
    static public void main(String args[])
       throws Exception
    {
       if (args.length < 1
       ||  args[0].equals("crash"))
       {
          throw new Exception ("no args, or arg=crash");
       }
    }
}

A CL program using RUNJVA:

   RUNJVA jcombine OUTPUT(*PRINT) CLASSPATH('x')
   MONMSG JVA0122 EXEC(SNDPGMMSG 'failed, no args')

   RUNJVA jcombine PARM('crash') OUTPUT(*PRINT) CLASSPATH('x')
   MONMSG JVA0122 EXEC(SNDPGMMSG 'failed, arg="crash"')

   RUNJVA jcombine parm('hello') OUTPUT(*PRINT) CLASSPATH('x')
   SNDPGMMSG 'no error, arg="hello"'

My joblog after running this CL program:

   Java program completed with exit code 1
   failed, no args
   Java program completed with exit code 1
   failed, arg="crash"
   no error, arg="hello"