What's different function with set?

Answer 1

my knowledge is not much about java but what a simple difference would be is the constructer will work on itself while the setter won't.

Answer 2

1.) constructors are called automatically while set
methods are called manually.
2.) constructors are used to instantiate the
attributes only. you can't change value using
constructors instead u have to use set method.

Answer 3

this is great