RosettaCodeData/Task/File-modification-time/Frink/file-modification-time.frink

f = newJava["java.io.File", "FileModificationTime.frink"]
epoch = #1970 UTC#
f.setLastModified[(#2022-01-01 5:00 AM# - epoch) / ms]
println[f.lastModified[] ms + epoch]