这个Bean的Spring的bean.xml文件我该怎么写？

下面这个类的配置文件该如何写？

public class ConnectionFactory {
    private static  ConnectionFactory instance = null;
 
    private ConnectionFactory() {
        System.out.println("ConnectionFactory的构造方法被调用了！");
    }
    public static ConnectionFactory getInstance() {
        if (instance == null) {
            synchronized (ConnectionFactory.class) {
                if (instance == null) {
                    instance = new ConnectionFactory();
                }
            }
        }
        return instance;
    }
    public void  getConnection() {
        System.out.println("ConnectionFactory的getConnection方法被调用了！");
    }
    public void free(Connection conn, Statement st, ResultSet rt) {
        System.out.println("ConnectionFactory的free方法被调用了！");
        System.out.println(conn);
        System.out.println(st);
        System.out.println(rt);
    }
}