Releases · kasapdev/java-env-config

Added

EnvConfig.section(String prefix) — returns a new EnvConfigSection view scoped to keys sharing a PREFIX_ separator. Given keys like DATABASE_HOST and DATABASE_PORT, config.section("DATABASE") exposes getString("HOST") and getInt("PORT") with the prefix stripped.
EnvConfigSection exposes the same typed accessors as EnvConfig (getString, getInt, getBoolean, has, keys, asMap), each delegating to the underlying EnvConfig's own lookup and type-conversion logic against the fully-qualified key — error messages, default-value fallback, and type coercion behave identically to the top-level config.
A prefix that matches no keys is not an error: section() returns a valid, empty section, and requesting a key from it behaves exactly as requesting a missing key from EnvConfig does (throws for the required overload, returns the default for the (key, default) overload).
New regression tests covering multiple prefixed groups (DATABASE_*, CACHE_*) scoped independently, cross-section key isolation, and the empty-section case — plus the full existing suite still passes unchanged.
README "Config Sections" section with a runnable example, and a second ## Usage example for a more realistic startup sequence.

Zero new dependencies — still plain javac/java, Java 17.