rJava parse date string, method not found

Question

In R 3.3.3, using the package rJava (version 0.9-9), running on Linux (RHEL 6.9), I am encountering an error running the following piece of code to create a Java Date from an R string:

library(rJava)

rDateString <- "2016-01-01 10:00:00"

.jinit()
df <- .jnew("java/text/SimpleDateFormat", "yyyy-MM-dd HH:mm:ss")
pp <- .jnew("java/text/ParsePosition", as.integer(0))
d <- .jcall(df, "Ljava/util/Date", "parse", rDateString, pp)

This gives the following error:

Error in .jcall(df, "Ljava/util/Date", "parse", rDateString, pp) : 
  method parse with signature (Ljava/lang/String;Ljava/text/ParsePosition;)Ljava/util/Date not found

This confuses me, because this method should be available. Calling .jmethods on my SimpleDateFormat object, results in (snip):

> .jmethods(df)
 [5] "public java.util.Date java.text.SimpleDateFormat.parse(java.lang.String,java.text.ParsePosition)"

So, as far as I can tell, I'm complying to the parse method signature, yet there is still an error. Can anyone shed some light as to what I am missing here? Much appreciated.

Juan Mellado · Accepted Answer · 2018-04-14 09:55:13Z

0

Missing semicolon (Ljava/util/Date => Ljava/util/Date;):

d <- .jcall(df, "Ljava/util/Date;", "parse", rDateString, pp)
d
[1] "Java-Object{Fri Jan 01 10:00:00 CET 2016}"

answered Apr 14, 2018 at 9:55

Juan Mellado

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1 Comment

Robin Klaassen Over a year ago

Brilliant! It's always the little things... Thanks a bunch.

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