Using this c return?

Question

Java

Help me please!
Give me this code. Tell me what exactly this is for. Maybe someone can throw off a tutorial on the topic "using this c return" because no matter how you google it ..

Answer 1

In order to be able to make calls "chained":
That is, the increment() method returns the object to which it belongs.
If it didn't return this, then you would have to do this:

x.increment();
x.increment();
x.increment();
x.print();

Answer 2

ok google, what is a fluent interface?