There are multiple ways to round a double or float value into 2 decimal places in Java. You can use one of the following methods: The DecimalFormat class The BigDecimal class The String.format() method The Math.round() method Note: If you are formatting a currency, always use the ...
The program formats a double value in two formats. var df = new DecimalFormat("#.##"); We create a new instance of theDecimalFormat. We pass it a non-localized pattern string. The pattern defines a format for a decimal value with a dot followed by two decimal places. df.applyPattern("...
private static double round(double value, int places) { if (places < 0) throw new IllegalArgumentException(); BigDecimal bd = new BigDecimal(Double.toString(value)); bd = bd.setScale(places, RoundingMode.HALF_UP); return bd.doubleValue(); } There is one important thing to notice in this...
var dataSlice = make([]map[string]interface{}, 0) for _, info := range list { data := utils.StructToMap(info) dataSlice = append(dataSlice, data) } t := reflect.TypeOf(models.PointInfo{}) file, err := utils.WriteExcel("", t, dataSlice) ...
Two decimal points makes me think of money. Ok, I drive by the PowerBall billboard on the way to work and think of money most of the morning. Anyhow, using floating point math for money will likely make you unhappy in the long run. Floats are good for very large numbers, like the ...
@test public void givendoubleliteral_whenassigningtodoublevariable_thenvalueisnotexactlyequal() { double doublevalue = 0.1; double epsilon = 0.0000000000000001; assertequals(0.1, doublevalue, epsilon); } 3. bigdecimal the bigdecimal class represents an immutable, arbitrary-precision, signed decimal ...
The formatter uses the built in double.ToString method with #.## as the default format which rounds the number to two decimal places: var b = (10.505).Kilobytes(); // Default number format is #.## b.ToString("KB"); // 10.52 KB b.Humanize("MB"); // .01 MB b.Humanize("b"...
Each row in Cities is checked -- to make sure it satisfied the constraints. -- if any rows don't satisfy the constraint, the -- constraint is not added ALTER TABLE CITIES ADD CONSTRAINT COUNTRY_FK Foreign Key (COUNTRY) REFERENCES COUNTRIES (COUNTRY); -- Add a primary key constraint to ...
So I have a double set to equal 1234, I want to move a decimal place over to make it 12.34 So to do this I multiply .1 to 1234 two times, ... 8. round double to two decimal places in java stackoverflow.com ok this is what I did to round a double to 2 decimal places, am...
Pattern; public class Main{ public static double round(double value, int places) { if (places < 0) throw new IllegalArgumentException(); long factor = (long) Math.pow(10, places); value = value * factor;//from ww w . j a v a2 s .c om long tmp = Math.round(value); return ...