to get the jar file unzip it and open the folders until you get to one that is full of files (for me I had to open two folders using the default options to unzip "mysql-connector-java-5.1.43\mysql-connector-java-5.1.43")and there should be the jar file called "mysql-connector-java-5.1.43-bin.jar"
then, you use scp comand from the comand line example "scp -P (port) /file/to/send [email protected]
:/where/to/put" for example I believe I used "scp -P 2222 C:/(..).jar [email protected]
:/dss/lib/JDBC" or something along those lines.
also when you try to do the connection with the database administrator be sure to not put 127.0.0.1 as the host, but the ip (i think is) 10.0.2.2 that appears on top of the vm terminal when DSS is up