private static void destroy(InputStream is, InputStreamReader isr,BufferedReader br)
	{
		try
		{
			if (null != br)
			{
				br.close();
			}
		} catch (IOException e)
		{
			e.printStackTrace();
		}

		try
		{
			if (null != isr)
			{
				isr.close();
			}
		} catch (IOException e)
		{
			e.printStackTrace();
		}

		try
		{
			if (null != is)
			{
				is.close();
			}
		} catch (IOException e)
		{
			e.printStackTrace();
		}
	}