mcasari

✅ Inject it and use it:

...
@Autowired
 TaskScheduler scheduler;

scheduler.schedule(
    () -> System.out.println("Hello!"),
    new CronTrigger("0 */5 * * * *") // every 5 min
);

mcasari

Given a class:

class Report {
    void print() {
        ...
    }
}

❌ If we extend the class without @Override:

mcasari

✅  Suppose you have a Shape interface:

interface Shape {
   double area();
}

✅ A typical implementation would be:

class Circle implements Shape {
   private double radius;