Constructors

Question 1

What they do

Answer 1

Make it simpler for initialising a lot of objects

Special method to initialise class variables

Question 2

Constructor set up

Answer 2

Have capitol of method and don’t have a return type

(){
Body
}

Question 3

Parameterless constructor

Answer 3

Constructor with no arguments. Java creates parameterless constructor (no arguments)

I.e class Customer {

}

Note: Java sets initial default values to null or 0

Question 4

Parameterised constructor

Answer 4

Accepted parameters which are assigned to instance variables of the class for that object

Class Customer {

   Instant variables 

   Customer(dat type variables) {

             Assign parameters to instant variable

   } }

Question 5

Multiple constructors

Answer 5

Used to initialise different members.

Class can have multiple constructors

Question 6

Parameters of a constructor are?

Answer 6

LOCAL PARAMETERS