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Keep objects talking only to their immediate friends. Fewer train-wreck chains, more intention-revealing methods. Your code gets safer, easier to change, and simpler to test. 💡
Why care?
- 🔒 Lower coupling
- 🛠 Easier refactors
- 🧪 Cleaner tests
- 📦 Better encapsulation
❌ Smell: Train-wreck chaining
✅ LoD-friendly: Tell, don’t ask
❌ Smell: Deep dives in streams
✅ LoD-friendly: Push logic to the owner
Quick checklist 🧾
- ▶️ Prefer order.shippingCity() over order.getCustomer().getAddress().getCity()
- 🗣️ Tell objects to do things, don’t pull their guts
- 🧩 Hide structure behind intention-revealing methods
- ✂️ If you must chain, keep it within the same object (fluent APIs are usually fine)
Go further with Java certification:
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