<dependency> <groupId>io.github.cdimascio</groupId> <artifactId>java-dotenv</artifactId> <version>5.1.1</version> </dependency> DB_HOST=localhost DB_PORT=5432 DB_USERNAME=myuser DB_PASSWORD=mypassword import io.github.cdimascio.dotenv.Dotenv; Dotenv dotenv = Dotenv.configure().load(); String dbHost = dotenv.get("DB_HOST"); String dbPort = dotenv.get("DB_PORT"); String dbUsername = dotenv.get("DB_USERNAME"); String dbPassword = dotenv.get("DB_PASSWORD"); String dbHost = dotenv.get("DB_HOST", "localhost"); Dotenv dotenv = Dotenv.configure().ignoreIfMalformed().ignoreIfMissing().load();