Formatting double to 2 decimals doesn't work

decimalformat java
java display 2 decimal places double
format double to 2 decimal places c#
java truncate double to 2 decimal places
java format float to 2 decimal places
how to set decimal places in java
two digits after decimal point in java
double to 2 digits

I want to round this double:

3.499999999999999

to:

3.50

And I already used these two methods:

DecimalFormat df = new DecimalFormat("0.00");
        double result = Double.valueOf(df.format(input));
        System.out.println(answer);

and

public double round(double input)
    {
        int decimalPlace = 2;
        BigDecimal bd = new BigDecimal(input);
        bd = bd.setScale(decimalPlace,BigDecimal.ROUND_UP);

        return (bd.doubleValue());
    }

But It keeps printing:

3.5

Does anyone have a solution for this? Because I really think that this should work. Thanks for your help.

Your first solution is really, really close. Just do this:

    DecimalFormat df = new DecimalFormat("0.00");
    System.out.println(df.format(input));

The reason your version doesn't work is that you're taking the input double, formatting it as a String with 2dp, but then converting it back to a double. System.out.println is then printing the double as it always would, with no special decimal-place rules.

Java - Display double in 2 decimal places, I know it does not have those constants but the formula behind the .format method must round it one of those 3 ways right? 5. This tutorial provides round double/float to 2 decimal places in java with the help of Math.round and DecimalFormat.

You can use the printf formatting which may be simpler.

System.out.printf("%.2f%n", 3.5);

prints

3.50

Best way to Format a Double value to 2 Decimal places, No, there is no better way. Actually you have an error in your pattern. What you want is: DecimalFormat df = new DecimalFormat("#.00");. The reason your version doesn't work is that you're taking the input double, formatting it as a String with 2dp, but then converting it back to a double. System.out.println is then printing the double as it always would, with no special decimal-place rules.

Did you try replacing the 0's with #'s?

DecimalFormat df = new DecimalFormat("#.##"); System.out.println(df.format(input));

According to here the # will be resolved to 0 if the digit is absent

Java format double 2 decimal places, A common task in Java is to format double to 2 decimal places (to in the format means that the digit at that position is optional and won't be� In this post I am going to show you a few different ways how you can format a decimal number (float, double, or decimal). To format your numbers to a maximum of two decimal places use the format string {0:0.##} as shown in the below example: string.Format(“{0:0.##}”, 256.583); // “256.58” string.Format(“{0:0.##}”, 256.

You can use Precision class of apache commons-math

double result = Precision.round(3.499999999999999, 2);

formatting a double to 2 decimal places java Code Example, Get code examples like "formatting a double to 2 decimal places java" instantly Your browser does not currently recognize any of the video formats available. HI, I have looked at other examples of fprintf, but my formatting on fare(4,75) is off and I am not sure why? fare(4,44) output is correct. Fare (4,75) should be 2.20 (80% of the full fare for 4 miles at 0.80* 2.75) Maybe I have just been looking at this for too long to figure it out.

How to Round a Number to N Decimal Places in Java, 2. Decimal Numbers in Java. Java provides two primitive types that can be n digits after decimal point, we can simply format the output String:� Decimal places in the code are indicated with a period (.). Number of zeroes after the period (.) define the number of decimal places. For example, 0 - display 1 decimal place; 00 - display 2 decimal places; If the number has more decimals than the decimal placeholders defined, the number will be rounded to the nearest number of placeholders.

Display double in 2 decimal points in Java, To display a specific number of decimals you need to use the static method format from String class. String.format("%.2f", number). where 2 is the� This tutorial will show you how display double in 2 decimal points in Java using String format method and DecimalFormat class. String format. To display a specific number of decimals you need to use the static method format from String class. String.format("%.2f", number) where 2 is the number of decimals. Example

String Format for Double [C#], Digits after decimal point. This example formats double to string with fixed number of decimal places. For two decimal places use pattern „0.00“. If a float number� This example formats double to string with fixed number of decimal For two decimal places use pattern „0.00“. float number has less decimal places, the rest digits on the right will be If it has more decimal places, the number will be rounded.

Comments
  • Given that 3.5 == 3.50 maybe your question should be about formatting and not rounding?
  • possible duplicate of Round a double to 2 significant figures after decimal point
  • Sorry, that's exactly the wrong way round for what the questioner wants. "#.##" will print "3.5", "0.00" will print "3.50". (Just tested it to be sure.)