How to write double number shorter in java?

Question

I have part of the code:

public void CollectorOrPocrushka(double output) {
    if (output <= 0.4999999999999999999999)
        System.out.println("покришка");
    if (output > 0.5 && output <= 1.0)
        System.out.println("колектор");
}

Can I write float number 0.4999999999999999999999 shorter?

Something like that: 0.49F 0.49e^10

Writing it _shorter_ how? Like maybe writing just `0.49` and putting a bar over the `9`? What did you have in mind? — Kevin Anderson, Jan 23 '21 at 13:01
Does this answer your question? [Format Float to n decimal places](https://stackoverflow.com/questions/5195837/format-float-to-n-decimal-places) — DontKnowMuchBut Getting Better, Jan 23 '21 at 13:11
I mean, how to make from 0.4999999.... something like that 0.49e^10 — Виктор Иванов, Jan 24 '21 at 20:28
@ Kevin Anderson I mean, how to make from 0.4999999.... something like that 0.49e^10 — Виктор Иванов, Jan 24 '21 at 20:30
You can't use 0.49, because that is not 0.4999999999999999999999, but more like 0.48999999999999999. You can't use 0.49e^10, because that is 4900000000 — Mark Rotteveel, Jan 25 '21 at 15:26
@ Mark Rotteveel So what can I use? I need shortform of 0.49999999 — Виктор Иванов, Jan 26 '21 at 18:49

score 3 · Answer 1 · answered Jan 23 '21 at 12:51

3

If your question is about to simplify the first if condition and your goal is to check if the output is less than or equal 0.4999999999999999999999, you can easily write

if(output < 0.5) 
    System.out.println("покришка");

answered Jan 23 '21 at 12:51

AmrDeveloper

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I mean, how to make from 0.4999999.... something like that 0.49e^10 @AmrDeveloper – Виктор Иванов Jan 24 '21 at 20:31

How to write double number shorter in java?

1 Answers1