Simple way to limit decimal places to two places

Question

    public static void main(String[] args) {//begin main
    Scanner worksheet = new Scanner(System.in);
       {
        double radi;
        double area;
        double circum;
        double pie = 3.14;

        System.out.println("Enter the radius: ");
        radi = worksheet.nextDouble();//enter 1.2 

        area = pie * radi * radi;

Area comes out as 4.521599999999999, but I want it to be 4.52.

        System.out.println("The area is:" + area);

        circum=2*pie*radi;

circum comes out as 7.536. want it to be 7.53

        System.out.println("The circumference is:"+circum);

    }

How can I truncate the value to 2 decimal places without a method.

Can you show us what you tried so far please? :) – Luke Bajada Mar 07 '17 at 18:49 — Luke Bajada, Mar 07 '17 at 18:49
@Blackbam Looks like java. Isn't it? – Hamza Anis Mar 08 '17 at 06:04 — Hamza Anis, Mar 08 '17 at 06:04

Hamza Anis · Accepted Answer · 2017-03-07T19:05:04.350

0

You can try

DecimalFormat df = new DecimalFormat("##.##");
df.setRoundingMode(RoundingMode.DOWN);
System.out.println("The circumference is:"+df.format(circum));

or you can simply do this

int temp = (int)(circum*100);//452
circum = temp/100d;//4.52

Both of these will limit the value up to 2 decimal points.

Wish it will solve the problem.

Reference (Take a look at this)

edited Mar 07 '17 at 19:05

answered Mar 07 '17 at 18:59

Hamza Anis

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thank you very much – Son Bramble Mar 16 '17 at 17:03
Welcome.@SonBramble – Hamza Anis Mar 16 '17 at 17:27

Simple way to limit decimal places to two places

1 Answers1