Float « Date Type « Android

1.Convert a float to 16.16 fixed-point representation
2.Convert a 16.16 fixed-point value to floating point
3.Random and Roundup
4.Is Long or double
5.calculate NormDiff
6.DecimalFormat, Maximum Fraction Digits
7.Format Distance
8.Gives the fractional part of a number
9.Close to a value

10.Value equals in a range, and ensure value inside a range
11.scale, round Number
12.Returns the smallest power of two that is greater than