List 方法结合初始化一个新的 object

Question

in my course i am actually at Lists and how to work with them. There is one command i dont fully get. I think the topic lists is pretty roff so please go easy on me.

Person node = list.remove(0);

Person is the Class node the new Oject

What is inside of node now is what were inside of list.(index 0), why is that, didn't i remove what is inside of the list? Can i handle it the same way like:

Person node = list.get(0); list.remove(0);

Answer 1

Person node = list.get(0); 
list.remove(0);

is equivalent to:

Person node = list.remove(0);

It is how the method is defined in the List interface. When you remove, the method also returns the Object removed. More in docs here: https://docs.oracle.com/javase/8/docs/api/java/util/List.html#remove-int-