machtpc

How to round off decimals in java?

  1. double roundOff = Math.round(a * 100.0) / 100.0; Output is.
  2. 123.14. Or.
  3. double roundOff = (double) Math. round(a * 100) / 100; this will do it for you as well.

How do you round to 2 decimal places?

How do you round to 3 decimal places in Java?

  1. class round{
  2. public static void main(String args[]){
  3. double a = 123.13698;
  4. double roundOff = Math. round(a*100)/100;
  5. System. out. println(roundOff);
  6. }

Does Java round decimals up or down?

The answer is Yes. Java does a round down in case of division of two integer numbers.

What is 1 over 3 as a decimal rounded to 2 decimal places?

I ideally believe in significant figures, so I would rather write it down as 0.3 . Most people will write it down as 0.33,0.333,0.3333 , etc. In practice use 13 as 0.333 or 0.33 , depending on the level of accuracy required.

What are 2 decimal places?

“Two decimal places” is the same as “the nearest hundredth”. “Three decimal places” is the same as “the nearest thousandth.” So, for example, if you are asked to round 3.264 to two decimal places it means the same as if your are asked to round 3.264 to the nearest hundredth.

How do you round to 2 decimal places in Java?

  1. double roundOff = Math.round(a * 100.0) / 100.0; Output is.
  2. 123.14. Or.
  3. double roundOff = (double) Math. round(a * 100) / 100; this will do it for you as well.

How do you do 2 decimal places in Java?

format(“%. 2f”, 1.23456); This will format the floating point number 1.23456 up-to 2 decimal places, because we have used two after decimal point in formatting instruction %. 2f, f is for floating point number, which includes both double and float data type in Java.

How do you set decimal places in Java?

Syntax: String. format(“%. Df”, decimalValue); where D is the number required number of Decimal places.

How do I round up in Java?

  1. Math. round () – this method rounds a number to the nearest integer.
  2. Math. floor () – this method rounds a number downward to the nearest integer.
  3. Math. ceil() – this method rounds a number upward to its nearest integer.

What is decimal format in Java?

DecimalFormat is a concrete subclass of NumberFormat that formats decimal numbers. It has a variety of features designed to make it possible to parse and format numbers in any locale, including support for Western, Arabic, and Indic digits.

How do you round a number to 4 decimal places in Java?

Example 1: Round a Number using format The 4 decimal places are given by the format . 4f. This means, print only up to 4 places after the dot (decimal places), and f means to print the floating-point number.

What does 3 decimal places mean?

When you round to the third decimal place, you’re rounding to the nearest thousandth. … That number will be the last digit in the rounded number, and your job is to decide whether to leave it as it is, which is rounding down, or add one unit, which is rounding up. Look at the fourth number in the decimal series.

What is the decimal form of 1 by 3?

Answer: 1/3 is expressed as 0.3333 in its decimal form.

What is 3 2 as a decimal?

Answer: 3/2 as a decimal is expressed as 1.5.

How do you round to three decimal places?