20:59

Final keyword in Java

23:36

Encapsulation in Java And "==" comparison on primitive variables

35:03

Polymorphic reference variables and Casting objects in Java

27:10

Object lifecycle and Object lifespan in Java

46:11

Superclass Constructors in Java

27:50

Java Method Parameters and Arguments

19:22

Static Methods in Java

27:16

AmazonLockerSystem/low-level design