Reading properties file

[nn12]

In my java app there is a code which reads the properties file from src/main/resources folder.

@Component("mailerProperties")
public class MailerProperties {

	private static Properties properties;
	
	public MailerProperties() {
		properties = new Properties();
		InputStream inStream;
		try {
			inStream = (new ClassPathResource("mailer.properties")).getInputStream();			
			properties.load(inStream);
		} catch (IOException e) {			
			e.printStackTrace();
		}	
	}
	
	public String getValue(String key) {
		return properties.getProperty(key);
	}

	
}

Now I need to create a jar file and also remove the properties file from src/main/resources folder and place it outside the jar file(in the same location as jar file) so that data inside it can be changed easily in future.

Question: Currently it uses ClassPathResource("mailer.properties") to read the prop file. What change I need to make to read it from outside the jar file

[Petr]

Read a text file from a jar - Real's Java How-to

[Tolls]

Except they don't want to read it from the jar.
They want to supply it with the jar and read it from that directory.