Properties وYAML

في هذا الدرس

read settings from a file.

الموضوعات المخطط لها

• A .properties file has key=value lines.
• YAML uses indentation for nesting and is easy to read; spaces matter, tabs are not allowed.
• Put the default file on the classpath (src/main/resources).
• Read values with Properties.load (plain Java) or a framework later.
• Give a clear error if a required value is missing.