You need to check the version of your Java Combined Client (JCC) installed? Try this way:
Retrieve DB2 JCC version:
// The following command will retrieve the JCC driver version if executed from the command line:
java com.ibm.db2.jcc.DB2Jcc -version
//Or for drivers that are not yet installed:
java -cp ./db2jcc.jar com.ibm.db2.jcc.DB2Jcc -version
//Content of db2jcc JAR file:
jar -tvf db2jcc.jar
All DB2 JDBC Driver versions, see here!
More information on DB2, Java, JDBC and JCC.