What is a constructor initializer list and when you use constructor initializer list?

1. You need not code them explicitly. Java will automatically place a default constructor 2. You can pass arguments to the constructor 3. They can return only an object of type of that class 4. They...

Every class, including abstract classes, MUST have a constructor. Hard Code that into your brain. But just because a class must have one, doesn't mean the programmer has to type it. A constructor...

to create an instance of object

Constructors are used in object-oriented programming languages to create usable instances of abstract data types (classes).

To create an instance of the class that implementing that constructor