numbers after comma in Java -

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how n numbers after comma in java?

... double numb = 123.45; void lastnumber(int n){    // here } ...

(in example n = 2, 2 numbers after comma)

a bit ugly:

public long getfraction(double num, int digits) {     int multiplier = powers_of_ten[digits];     long result = ((long) (num * multiplier)) - (((long) num) * multiplier);     return result; }

where powers_of_ten array of precomputed powers of ten (0=1, 1=10, 2=100, 3=1000, etc.)


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