Read properties from properties file in a regular interval at runtime

There are some properties, and I want to read these properties in an interval, and if there is any update in the properties, I am taking some action on that basis.

	@Value("${sms.smpp.country.list:{}}")
	private String smppCountryList;

	@Value("${sms.smpp.country.config.list:{}}")
	private String smppCountryConfigList;

	@Value("${sms.smpp.properties.file.location:{}}")
	private String propertiesFileLocation;
	 

I have written a code to read the properties using cron, here is the code.

	@Scheduled(cron = "0 0/7 * * * ?")
	public Properties readPropertiesFile() {
		Properties prop = null;
		
		try (InputStream input = new FileInputStream(propertiesFileLocation)) {
			prop = new Properties();
			prop.load(input);
		} catch (IOException ex) {
			logger.info("[SMPP] [CONFIG CRON] Exception occurred while reading the properties file: [{}]",ex.getMessage());
		}
		
		return prop;
	}

The code is getting called by the cron, or I can also write an onFileChangeHandler on the file.

But is there any easy and elegant way to do this, like can this be handled by spring?

Edit 1: Looking at your code i want to point one thing that @Value variables won't be updated with updated value even if you continuously run cron job

If you regularly want to look for configuration changes Spring Boot comes with a spring config server.

Your micro service will be up to date with the configuration without writing any lines to code.

Have a look a Spring Cloud Config Server

You have to use Spring Config Server and if you want to update property annotated with @Value, you need to annotate the class with @RefreshScope.