الكتل النصية ومكاسب صغيرة أخرى

في هذا الدرس

write multi-line text clearly and use other small features.

الموضوعات المخطط لها

• A text block starts and ends with three quotes.
• It keeps line breaks and removes common indentation. Good for JSON and SQL.
• var for local variables when the type is obvious.
• List.of, Map.of, and Stream.toList() give short, immutable collections.
• Helpful NullPointerException messages tell you which variable was null.