Initialization of Main() in java and seeking alternative code

Question

I am given a following partial Java code:

public static void main(String[] args) {
  var main = new Main();
  main.start();
}

I don't understand the initializing in Line 2 (Main()).

Also, what is the datatype of Main()? Suppose, I don't want to use 'var' keyword, then what should I use?

If there is any alternative code for this, please let me know.

use Main instead of var (old type)? You could debug as well if you want to know the type, you could print the type as well. — SMA, Dec 01 '19 at 06:07
Do take a look at https://stackoverflow.com/questions/44315657/what-is-the-exact-meaning-of-instantiate-in-java and https://stackoverflow.com/questions/12005584/initialize-object-directly-in-java — Naman, Dec 01 '19 at 06:12
`new Main()` is creating an instance of `Main` and calling its constructor `Main()` with no arguments — user85421, Dec 01 '19 at 21:12

OneCricketeer · Accepted Answer · 2019-12-01T06:20:26.833

5

I don't understand the initializing in Line 2 (Main())

You're initializing an object of type Main, in order to call the instance method start()

The alternative is to replace var with Main

Or simply new Main().start();

edited Dec 01 '19 at 06:20

answered Dec 01 '19 at 06:09

OneCricketeer

score 1 · Answer 2 · answered Dec 01 '19 at 06:16

1

You can use something like this:

public static void main(String[] args) {
   Main main = new Main();
   main.start();
}

answered Dec 01 '19 at 06:16

mohsenJsh

2 Answers2