Code for displaying the smallest power of 2 greater than or equal than the integer

Question

I need a code in Java that can find the smallest power of 2 greater than or equal to any non-negative integer entered by the user. Can anyone help?

Answer 1

i>1 ? Integer.highestOneBit(i-1)<<1 : 1

Obviously suffers from integer overflow (there isn't a strictly correct solution in int for around half of positive ints).

Usual disclaimer: Not tested or compiled.

Answer 2

See this link

Algorithm for finding the smallest power of two that’s greater or equal to a given value

Bye.