How to resolve error when overriding mssql-jdbc driver in Classpath - Main method not found in class

Question

I want my java application to use jdbc 7.4.1 version. After researching, I found overriding classpath is one way to do it. But I am getting below error.

Environment: RHEL

override classpath

java -cp /home/xyz/sqljdbc_7.4/enu/mssql-jdbc-7.4.1.jre8.jar com.microsoft.sqlserver.jdbc.SQLServerDriver

Error

Error: Main method not found in class com.microsoft.sqlserver.jdbc.SQLServerDriver, please define the main method as:
   public static void main(String[] args)
or a JavaFX application class must extend javafx.application.Application

Question: Is this the right way to do it or there are other/better ways to accomplish the same thing? Secondly, how to resolve the error I am getting?

Answer 1

With the line

java -cp /home/xyz/sqljdbc_7.4/enu/mssql-jdbc-7.4.1.jre8.jar com.microsoft.sqlserver.jdbc.SQLServerDriver

you are executing the class com.microsoft.sqlserver.jdbc.SQLServerDriver with class path set to /home/xyz/sqljdbc_7.4/enu/mssql-jdbc-7.4.1.jre8.jar That's the reason why you getting the error given above. Because jvm tries to find the main entry point (public static void main()) in the jar com.microsoft.sqlserver.jdbc.SQLServerDriver. I guess you want to set both jars in class path and execute your own programm. The you have to call it that way:

java -cp .:/home/xyz/sqljdbc_7.4/enu/mssql-jdbc-7.4.1.jre8.jar:com.microsoft.sqlserver.jdbc.SQLServerDriver <place your jarfile here>