To run a Java class $"$a$.$b$.$P$"$ in folder"~$|$a$/$b$/$P$.$class$*$

$$ Which is the correct command

$1)$ With $"-"$ being the working folder, run command "java albip"

$2)$ With $"-"$ being the working folder, run command "java a$.$b$.$P$"$

$3)$ With $"-"$ being the working folder, run command "java P$.$class"

$4)$ With $"-"$ being the working folder, run command "java P$"$