How does chained methods execute in java?

Question

Here is my code :

result = method1().method2().method3();

I would like to know the execution hierarchy of the above code/

Answer 1

I'm explaining hierarchy of the above code with small example.

result = method1().method2().method3();

Example:

getYear().toString().trim(); //like method1().method2().method3()

First will be execute get year() which returns a Integer:

2016.toString().trim();

Secound will be execute toString() method of integer class which returns an string:

"2016".trim();

In Last trimming the stringwith trim() method of string class.