Вывод данных на экран

import java.sql.*;

public class ShowData {
    public static void main(String[] args) throws ClassNotFoundException, SQLException {
        Class.forName("COM.ibm.db2.jdbc.app.DB2Driver");
        Connection conn = DriverManager.getConnection("jdbc:db2:DBName", "user", "password");
        Statement statement = conn.createStatement();
        ResultSet rs = statement.executeQuery("select * from tablename");
        ResultSetMetaData metadata = rs.getMetaData();
        int numofcol = metadata.getColumnCount();
        while(rs.next()){
        for(int i=1;i<numofcol;i++){
            System.out.println(rs.getObject(i));
        }
    }
        statement.close();
        conn.close();
}
}