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Android Build a Simple Android App with Java Improving Our Code Simple Refactoring: Using a New Class

Vlad Vamos
Vlad Vamos
1,288 Points

Object Initialization

If we do this for example

FactBook factBook;
factBook = new FactBook();

does the initialization happen on the first or on the second line? I would guess on the second, but if so what practically happens at declaration? Nothing?

1 Answer

Josh Keenan
Josh Keenan
19,428 Points

At declaration the space in memory for the object is being allocated and predefined as specifically for an object, you could have thousands of lines of code, and trying to take more space later on is slow and clunky, reserving it all at the start means the computer knows what it is giving to your code to run, and the code has its space defined.

Vlad Vamos
Vlad Vamos
1,288 Points

So am I correct about the initialization part?

Josh Keenan
Josh Keenan
19,428 Points

Yes you are, sorry about the slow response, it is initialised in line two.