get more decimals?!?! please help!

[michcio]

hello I wonder if there is a way to easy store a huge amount decimals. I have done a program that returns PI with many decimals that are right...But double can only store up to 14 decimals...how could I show my PI(System.out.println) ?? please help!!!

here is my short code

Code:

    public static void main(String[] args) {
double summa = 0;
for(double i=0; i<100; i++)
            
summa += Math.pow((-1),i)/(2*i+1) * (4/(Math.pow(5,(2*i+1)))-(1/Math.pow(239, (2*i+1))));
summa *= 4;
System.out.println(summa);
        
                
    }

}

it's a really short program that only add 100 of elemnts and then I got 14 deciomals right...but please help how do I do so I can see more then 14 decimals??????

[rjuyal]

how about BigDecimal!!!

[michcio]

ah nice I didn't know there was a special class for this ...can BigDecimal have as many Decimals I want?...can you explain a bit how I should use it

[rjuyal]

Just like you working with double

But don't use +, - , *, / , instead use its owb methods:


See the link, This might be helpful for you:

http://java.sun.com/j2se/1.5.0/docs/...igDecimal.html

[michcio]

wow nice now I can finally write my PI ty very much

[rjuyal]

How about closing the thread as Solved

[michcio]

yeah how do I do that?