I am happy to report that the author and maintainer of rJava informed me
that the 2-dim array in java needs sapply and .jevalArray as follows:
> conn2Arr <- sapply(.jfield(rJavaTst,sig="[[D","con2Arr"),.jevalArray)
> conn2ArrRet <-
> sapply(.jcall(rJavaTst,returnSig="[[D","retCon2Arr"),.jevalArray)
> # I can't identify any complaints so far
> print(conn2Arr)
[,1] [,2] [,3]
[1,] 101 201 301
[2,] 102 202 302
[3,] 103 203 303
[4,] 104 204 304
> print(conn2ArrRet)
[,1] [,2] [,3]
[1,] 101 201 301
[2,] 102 202 302
[3,] 103 203 303
[4,] 104 204 304
I know there are a few out there interested since I see I got a few views.
But, I don't know the solution to the parameter-passing problem yet.
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