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I'm using R and i need to open an excel file, while i'm working with it it appears the next message: Error in .jcall("RJavaTools", "Z", "hasField", .jcast(x, "java/lang/Object"), : RcallMethod: cannot determine object class The function that i'm using is read.xlsx2 from the package xlsx.

I´m having this problem since i linked my desktop with onedrive (R didn't found the files), i tried unlinking my desktop, but i had the same problem (didn't found) (and i changed the directory of the function). Then, i changed the directory of the excel and obtained this message:

Error in .jcall("RJavaTools", "Z", "hasField", .jcast(x, "java/lang/Object"), : RcallMethod: cannot determine object class

Fernando Marcelo Figueroa Carp
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  • Does this happen with only this file or with all .xlsx files? And does it still happen if you put this file in a directory that is not on one drive? – Andrea M Apr 02 '22 at 07:43
  • It happens with all .xlsx files, when the file is in a directory that is on the one drive, R doesn't find it. When i put the file in desktop or other directory that is not on drive, it appears the .jcall error. – Fernando Marcelo Figueroa Carp Apr 02 '22 at 21:32

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