The use of “this” in Java

Question

If I write the following class:

public class Example {

      int j;
      int k;

      public Example(int j, int k) {
           j = j;
           k = k;
          


        

Answer 1

this is useful when you want to return the object itself

return this;

This is useful because if a class has for example Method1() and Method2(), both returning this, you are allowed to write calls like

object.Method1().Method2()

Also inside a method it can be useful to pass the object itself to another function, during a call.