WebSphere 6.0 - DataSource java.sql.SQLException: java.lang.UnsupportedClassVersion

While creating MySQL JDBC Data source for WebSphere 6.0 the database connection is failing with the error of DataSource java.sql.SQLException: java.lang.UnsupportedClassVersion. Unsupported major.minor version 49.0

This is b'cos datasource is created with the mysql-connector-java-5.1.14 instead of this try the lower version connector for establishing connection with MySQL database and it is mysql-connector-java-3.1.6-bin.jar
after creating the datasource websphere application server must be restarted to load the newly loaded connecters.