library(rcdk);
mols <- parse.smiles("CCCC") ;
view.molecule.2d(mols);

Error in .jnew("org/guha/rcdk/view/ViewMolecule2DTable", array, as.integer(ncol), : java.lang.NoSuchMethodError: <init>
Traceback:

1. view.molecule.2d(mols)
2. .jnew("org/guha/rcdk/view/ViewMolecule2DTable", array, as.integer(ncol), 
 .     depictor)

I am getting above error in windows and google colab. In mac it is working fine.

This forum is for technical support issues pertaining to Bioconductor packages. rcdk is a CRAN package. You could try GitHub, where the issue already seems to have been reported: https://github.com/CDK-R/cdkr/issues/61