import java.sql.Connection;
import java.sql.DriverManager;
public class Main {

    public static void main(String[] args) {

        Connection con = null;
        try {

            Class.forName("org.apache.cassandra.cql.jdbc.CassandraDriver");
            DriverManager.registerDriver(new org.apache.cassandra.cql.jdbc.CassandraDriver());

          //  con = DriverManager.getConnection("jdbc:cassandra://localhost:9042/key_space");
            con = DriverManager.getConnection("jdbc:cassandra:root/root@localhost:9042/key_space");

        }
        catch (Exception ex)
        {
            System.out.println("Error: " + ex.getMessage());
        }
    }
}

Error: String index out of range: -1

org.apache.cassandra.cql.jdbc.DriverResolverException: Read a negative frame size (-2080374784)