What is the purpose of the code following the equals sign? Game game = new Game("")

Question

I understand that the former Game refers to the class Game and that this instance is then called game. Is the code following the equals sign...

Game game = new Game("treehouse")

written simply in order to pass in the String parameter or does it serve another purpose? Having it equal a new instance of the Game class seems unnecessary - do I have to create a 'new' instance of the Game class at all?

Thank you.

Answer 1 · 2016-08-25T02:46:19Z

August 25, 2016 2:46am

Hi John - If you only write

Game game;

then you've declared a variable that can reference a Game object but you haven't instantiated any object yet. To instantiate the object you need to use the new keyword followed by the name of the class and the parenthesis. What that really does is that it calls the constructor that creates the object. In this case, the constructor takes a String parameter. Sometimes you see code like this:

Game game = new Game();

Here we are using the default constructor which creates an instance of Game. All classes, automatically get the default constructor even if you don't define it yourself, but if you want other constructors that take parameters you need to write those yourself.

Answer 2 · 2016-08-27T03:30:06Z

August 27, 2016 3:30am

the code following after the equal sign is for instantiating a class Foo f=new Foo(); this is the instatiation of an new class that takes no arguments Game game=new Game("Pez"); this is the instatiation of a class that takes an argument from the user

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John Marley

John Marley

What is the purpose of the code following the equals sign? Game game = new Game("")

2 Answers

Kourosh Raeen

Kourosh Raeen

John Marley

John Marley

Kourosh Raeen

Kourosh Raeen

Huggins Tatenda Mafigu

Huggins Tatenda Mafigu