Ctrl Plus Code: "Constructors Injection in SPRING. Why it's best: -> Fields can be fina"

Constructors Injection in SPRING. Why it's best: -> Fields can be final — immutable, thread-safe -> Easy to unit test — just new OrderService(mockPayment, mockNotif) -> Dependencies are explicit and visible #CtrlPlusCode #Java #Spring

Ctrl Plus Code@CtrlPlusCode

Three Types of Autowiring in Spring: 1. Field Injection ❌ (Not Recommended) 2. Constructor Injection ✅ (Recommended) 3. Setter Injection ⚠️ (Use Only for Optional Dependencies) #CtrlPlusCode #Java #Coding

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