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{
}

List down the methods and interfaces of collection class in java.

932

---

Why are functions called methods in java?

941

---

How many types of design patterns are there?

1043

---

Why is a string immutable?

936

---

What is static import?

1090

---

What means public static?

991

---

How does list work in java?

863

---

What is difference between arraylist and list in java?

1018

---

What is a class variable?

978

---

Do you need to import math in java?

934

---

What are scriptlets?

1025

---

What is the difference between scrollbar and scrollpane?

1044

---

What is the purpose of a transient variable?

999

---

Distinguish between a predicate and a function?

938

---

What is java util collection?

996

---