example
public class GreetingsServiceImpl implements GreetingsService {
@Value("${myProperty:defaultValue}")
private String property;
@Override
public GreetingUI getGreeting() {
// will read from resources/application.properties or will take default value
String propValue = property;
return new GreetingUI().message("greeting from backend");
}
}/resources/application.properties
myProperty = helloThere;