Answer Posted / nagendra

1. autoboxing and unboxing.
2. enums.
3. StringBuilder.
4. var-args.
5. Generics.
6. Annotations.
7. Covarent return types.
8. nested for-each loop.

What is %d in printf?

527

---

What is a char in java?

533

---

What is Java Reflection API? Why it’s so important to have?

602

---

What are void methods?

568

---

Is assembly language a low level language?

494

---

---

Explain wrapper classes in java?

529

---

What is time complexity java?

534

---

What is thread safe java?

495

---

Why java is made?

564

---

Explain what is encapsulation?

604

---

Describe 2 different ways to concatenate two strings.

677

---

Why can't we override private static methods?

517

---

What is the class in java?

556

---

Is map ordered in java?

531

---

Is singleton class thread safe?

533

---