Answer Posted / farhad

A final class CANNOT be extended or subclassed however it can be instantiated:
final class A{
}

class B{
A a = new A(); //<<< instantiating final class A
We cannot say:
class B extends A //!!! that's a NO NO.
On the other hand abstract class can be subclassed but CANNOT be instantiated.
abstract class A{
}
class B extends A{
}

what happens when a thread cannot acquire a lock on an object? : Java thread

1105

---

What do you mean by stream pipelining in java 8?

1285

---

What is arrays fill in java?

1060

---

How long will it take to learn java?

1034

---

What are sets in java?

1003

---

Can a class with private constructor be extended?

1001

---

What is string subsequence method?

1176

---

What is return used for in java?

1069

---

How do you reverse sort a list in java?

1003

---

What is java literals?

1204

---

What do you mean by collectors in java 8?

983

---

What does g mean in regex?

1034

---

Assume a thread has lock on it, calling sleep() method on that thread will release the lock?

1161

---

Can we create a class inside a class in java?

1148

---

Which programming language is best in future?

1023

---