Udacity OOJava

Question 1

What is a constructor?

Answer 1

special types of methods that are responsible for creating and initializing an object of that class

Question 2

How do you create a constructor?

Answer 2

Same as methods except:

• Constructors don’t have any return types
• Constructors have the same name as the class itself

They can however take input parameters like a normal method, and you are allowed to create multiple constructors with different input parameters.

class Game{
   ...
   // Constructor
   Game(){
      // Initialization code goes here
   }
   ...
}

Question 3

What is a default constructor?

Answer 3

doesn’t take any input parameters at all!

if you don’t create a default constructor, Java will automatically assume there’s one by default that doesn’t really do anything.

Question 4

Loops
What is the shorthand for?
i++;

Answer 4

i = i+1;

Question 5

Loops
What is the shorthand for?

i = i-1;

Answer 5

i–;

Question 6

Loops
What is the shorthand for?

i = i+5;

Answer 6

i += 5;

Question 7

Loops
What is the shorthand for?

i = i-6;

Answer 7

i -+ 6;