JDBC:RowSet usage(JAVA 7 feature)

package myjdbc;

import javax.sql.rowset.JdbcRowSet;
import javax.sql.rowset.RowSetProvider;

//This feature is added as part of JAVA 7.

public class RowSet1 {
   
    public static void main(String[] args) throws Exception
    {
            Class.forName("org.apache.derby.jdbc.ClientDriver");
            String url = "jdbc:derby://localhost:1527/hari";
            JdbcRowSet rs = RowSetProvider.newFactory().createJdbcRowSet();
            rs.setUrl(url);
            rs.setUsername("app");
            rs.setPassword("app");
            rs.setCommand("select * from MYEMP");
            rs.execute();
            while(rs.next()){
            System.out.println(rs.getInt(1)+" "+rs.getString(2)+" "+rs.getFloat(3)+" "+rs.getString(4));              
            }
    }
}