These classes wrap a numeric vector to be treated as
float or long argument when passed to Java and an
integer vector to be treated as byte or char. R doesn't
distinguish between double and float, but Java
does. In order to satisfy object types, numeric vectors that should be
converted to floats or long on the Java side must be wrapped in this
class. In addition jbyte must be used when passing scalar byte
(but not byte arrays, those are mapped into RAW vectors). Finally
jchar it used when mapping integer vectors into unicode Java
character vectors.
Objects can be created by calling .jfloat,
.jlong, .jbyte or .jchar
respectively.
.Data:Payload
"jfloat" and "jlong":
Class "numeric", from data part.
Class "vector", by class "numeric".
"jbyte" and "jchar":
Class "integer", from data part.
Class "vector", by class "integer".
"jfloat" and "jlong" have no methods other than those inherited from "numeric". "jbyte" and "jchar" have no methods other than those inherited from "integer".
Simon Urbanek
.jfloat, .jlong, .jbyte, .jchar and .jcall