Java Utililty Methods Double Number Round

List of utility methods to do Double Number Round

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Description

The list of methods to do Double Number Round are organized into topic(s).

Method

doubleround(double num)
round 
double floor = Math.floor(num);
if (num - floor >= 0.5) {
    return Math.ceil(num);
} else {
    return floor;
Stringround(Double num)
round 
return String.format("%.2f", num);
doubleround(double num, int bit)
round 
int t = 10;
for (int i = 0; i < bit; i++)
    t *= 10;
double n = num * t;
if (5 <= (n % 10))
    n += 10;
return (double) ((int) n / 10) / (t / 10);
doubleround(double num, int decimal)
Round-off double to given number of decimal places. 
double factor = Math.pow(10, decimal);
return Math.rint(num * factor) / factor;
doubleround(double num, int numDecs, boolean rawFactor)
Round a number to xyz decimal values ... 
double ex = numDecs;
if (!rawFactor)
    ex = Math.pow(10, numDecs);
return Math.round(num * ex) / ex;
doubleround(double num, int precision)
Rounds num to the precision-th decimal place. 
double modifier = Math.pow(10, precision);
double result = Math.round(num * modifier);
return result / modifier;
doubleround(double number)
Rounds an argument number with precision of 2 decimal digits. 
return round(number, 2);
doubleround(double number, double multiplier)
Rounds the number of decimal places based on the given multiplier.
e.g.
Input: 17.5245743
multiplier: 1000
Output: 17.534
multiplier: 10
Output 17.5

return Math.round(number * multiplier) / multiplier;
doubleround(double number, int decimal)
round 
return Math.round(number * Math.pow(10, decimal)) / Math.pow(10, decimal);
doubleround(double number, int digit)
Rounds a number to keep specified digits. 
long l = Math.round(number * Math.pow(10, digit));
return (double) l / Math.pow(10, digit);