Object value reset (java)?

Question

Java

I have a method, I add an object to it through the argument, in the method I change this object in every possible way, and when the method exits, the values ​​\u200b\u200bare not saved ... in one book I saw something about this, but I don’t remember which book , but in Google it was not possible to score a normal question ...
in general, how to save changes to an object after exiting a method?
language-java

Answer 1

Maybe you have a bug in your code? That sheet that you posted in the comments is impossible to read. The simplest example works.

Answer 2

give an example code, then it will be possible to say something

Answer 3

pass the value by reference (i.e. use the Integer, String or other wrapper) or make the variable global