final — keyword preventing modification/overriding/extension. finally — block that executes regardless of exceptions. finalize() — deprecated method called by GC.Vivid analogy: final is like a tattoo — once applied, permanent. finally is like a cleanup crew — always shows up. finalize() is like a farewell letter — unreliable and deprecated.Why it matters: finally is critical for resource management — guarantees cleanup of file handles, database connections, and locks even when exceptions occur.javafinal int X = 10;// X = 20; // Compile error!try { riskyOperation();} catch (Exception e) { System.out.println("Caught: " + e.getMessage());} finally { System.out.println("Always executed!");}protected void finalize() { // DO NOT USE — use AutoCloseable instead}- final — immutable reference/method/class.- finally — guaranteed cleanup.- finalize() — deprecated, avoid.