Finally I found out that com.sap.conn.jco.JCo is an alternative for com.sap.mw.jco, and the alternaive is available in sapjco.jar. This was also suggested by Seelenvirtuose.
But the classes in this jar may be slightly different than the other one.
http://www.finereporthelp.com/download/SAP/sapjco3_linux_32bit/javadoc/com/sap/conn/jco/JCo.html
Check the above link for its properties
Thank you