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## How do I control the number of decimal places in Java?

Using Math.**round()**

round() method is another method to limit the decimal places in Java. If we want to round a number to 1 decimal place, then we multiply and divide the input number by 10.0 in the round() method. Similarly, for 2 decimal places, we can use 100.0, for 3 decimal places, we can use 1000.0, and so on.

## How do you correct to 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 change decimal places in Java?

**7 ways to format double to 2 decimal places in java**

- Using String’s format() method.
- Using System.out.printf.
- Using Formatter.
- Using BigDecimal.
- Using DecimalFormat.
- Using NumberFormat.
- Using Apache common library.

## How do I remove decimal places in Java?

Shift the decimal of the given value to the given decimal point by **multiplying 10^n**. Take the floor of the number and divide the number by 10^n. The final value is the truncated value.

## Can we convert double to string in Java?

We can convert double to String in java using **String.** **valueOf() and Double**. toString() methods.

## What is .2f in Java?

printf(“%. 2f”, val); In short, the %. 2f syntax tells **Java to return your variable ( val ) with 2 decimal places** ( . 2 ) in decimal representation of a floating-point number ( f ) from the start of the format specifier ( % ).

## What is DecimalFormat 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.

## What is Floor value Java?

Math. floor() **returns the double value that is less than or equal to the argument and is equal to the nearest mathematical integer**. Note: If the argument is Integer, then the result is Integer. If the argument is NaN or an infinity or positive zero or negative zero, then the result is the same as the argument.

## What is the precision of double in Java?

Double data type stores decimal values with **15-16 digits of precision**. The default value is 0.0d; this means that if you do not append f or d to the end of the decimal, the value will be stored as a double in Java.

## What is printf in Java?

The printf() method of Java PrintStream class is **a convenience method which is used to write a String which is formatted to this output Stream**. It uses the specified format string and arguments to write the string.

## How do I reduce decimal places in numbers?

**Numbers**

- Select the cells or table you want to format.
- In the Format sidebar, click the Cell tab.
- Click the Data Format pop-up menu and choose an option: Number: Displays standard number formatting. Set the number of decimal places: In the Decimals field, type the number of decimal places you want to display.

## How do you round to 2 decimal places?

**Rounding to decimal places**

- look at the first digit after the decimal point if rounding to one decimal place or the second digit for two decimal places.
- draw a vertical line to the right of the place value digit that is required.
- look at the next digit.
- if it’s 5 or more, increase the previous digit by one.