java -jar myapp.jar --port=8080
export DB_URL=jdbc:mysql://localhost:3306/mydb
db.username=root
db.password=secret
import io.activej.config.Config;
import io.activej.config.ConfigModule;
public class MyApp {
public static void main(String[] args) {
Config config = Config.create()
.withParser(ConfigModule.create()
.withCommandLineArguments(args)
.withEnvironmentVariables()
.withPropertiesFile("myapp.properties")
)
.withValue("db.username", "default_username")
.withValue("db.password", "default_password")
.build();
String dbUrl = config.get("db.url");
String dbUsername = config.get("db.username");
String dbPassword = config.get("db.password");
// ...
}
}
