What is the difference between adapter and facade?

633

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Write the code for a singleton class?

622

---

Why have we used synchronized here?

614

---

Give me example of chain of responsibility design pattern?

625

---

Are you using singleton in your code?

595

---

What is the difference between proxy and adapter?

609

---

What is the use of such a class?

671

---

Can we have this pattern implemented using static class?

579

---

What is the difference between factory and abstract factory design pattern?

581

---

Why have we declared the instance reference volatile?

541

---

How many methods do u implement if implement the serializable interface?

545

---

What does the “abstract” keyword mean in front of a method? A class?

524

---

How many methods are there in the externalizable interface?

561

---

What interface must an object implement before it can be written to a stream as an object?

613

---

What does it mean that a method or class is abstract?

518

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