Initialize default Locale and Timezone with Spring configuration

Question

I\'m loading application settings such as JDBC connection info from a properties file using PropertyPlaceholderConfigurer. I\'d like to also have other settings

Answer 1

It may make sense to ensure that these are set before any beans are processed or initialized, as any beans created before this code is run could end up using the previous system default values. If you are using Spring Boot, you could do this in the main method before even initializing Spring:

@SpringBootApplication
public class Application {
    public static void main(String[] args) {
        Locale.setDefault(Locale.US);
        TimeZone.setDefault(TimeZone.getTimeZone("America/New_York"));

        SpringApplication.run(Application.class, args);
    }
}

If this needs to be run as part of a context that doesn't call the main method, e.g. in a JUnit integration test, you would need to make sure that it's called:

@SpringBootTest
public class ApplicationTest {
    @BeforeClass
    public static void initializeLocaleAndTimeZone() {
        // These could be moved into a separate static method in
        // Application.java, to be called in both locations
        Locale.setDefault(Locale.US);
        TimeZone.setDefault(TimeZone.getTimeZone("America/New_York"));
    }

    @Test
    public void applicationStartsUpSuccessfully() {
    }
}