`devtools::load_all()` doesn't load inst/java

[TanguyBarthelemy]

I try to update my package {rjd3toolkit} and work with {devtools}.
But I have the impression that load_all() doesn't load the java .jar files (inside inst/java):

devtools::load_all()

BE <- national_calendar(list(
    fixed_day(7, 21),
    special_day("NEWYEAR"),
    special_day("CHRISTMAS"),
    special_day("MAYDAY"),
    special_day("EASTERMONDAY"),
    special_day("ASCENSION"),
    special_day("WHITMONDAY"),
    special_day("ASSUMPTION"),
    special_day("ALLSAINTSDAY"),
    special_day("ARMISTICE")
))
q <- holidays(BE, "2021-01-01", 366 * 10, type = "All")
#> Error in .jcall("jdplus/toolkit/base/r/calendar/Calendars", "Ljdplus/toolkit/base/api/timeseries/calendars/Calendar;",  : 
#>  RcallMethod: cannot determine object class
#>  Calls: holidays -> .p2jd_calendar -> .jcall

^{Created on 2025-03-19 with reprex v2.1.1}

The solution I found is to first load the package with library() then call load_all when I update a R script. But it doesn't work when updating the inst folder:

library("rjd3toolkit")
#> 
#> Attaching package: 'rjd3toolkit'
#> The following objects are masked from 'package:stats':
#> 
#>     aggregate, mad
devtools::load_all()
BE <- national_calendar(list(
    fixed_day(7, 21),
    special_day("NEWYEAR"),
    special_day("CHRISTMAS"),
    special_day("MAYDAY"),
    special_day("EASTERMONDAY"),
    special_day("ASCENSION"),
    special_day("WHITMONDAY"),
    special_day("ASSUMPTION"),
    special_day("ALLSAINTSDAY"),
    special_day("ARMISTICE")
))
q <- holidays(BE, "2021-01-01", 366 * 10, type = "All")
head(q)
#>            [,1] [,2] [,3] [,4] [,5] [,6] [,7] [,8] [,9] [,10]
#> 2021-01-01    0    1    0    0    0    0    0    0    0     0
#> 2021-01-02    0    0    0    0    0    0    0    0    0     0
#> 2021-01-03    0    0    0    0    0    0    0    0    0     0
#> 2021-01-04    0    0    0    0    0    0    0    0    0     0
#> 2021-01-05    0    0    0    0    0    0    0    0    0     0
#> 2021-01-06    0    0    0    0    0    0    0    0    0     0

^{Created on 2025-03-19 with reprex v2.1.1}

Do you have a solution?

[lionel-]

It's quite possible load_all() isn't compatible with java libraries. Unfortunately it wouldn't be high priority enough for us to fix this in the short or medium term.