**Contents**show

## Does Java have decimal?

Use the modulus operator to check if there is a remainder. int will **not hold** a decimal, they always take the floor of the result: for example 3 / 5 = 0 as an int . That said you can use modulo ( % ) to determine if decimals are being dropped.

## 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 a decimal format?

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 I fix decimal places in Java?

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

## 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.

## 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 you round to 2 decimal places in math?

Rounding off to the nearest hundredths is the same as rounding it to 2 decimal places. To round off a number to 2 decimal places, look **at the digit in the thousandths place**. If the digit in the thousandths place is greater or equal to 5, the hundredths digit is increased by one unit.

## Can a double be a char?

char: The char data type is a single 16-bit Unicode character. It has a minimum value of ‘u0000’ (or 0) and a maximum value of ‘uffff’ (or 65,535 inclusive).

…

Default Values.

Data Type | Default Value (for fields) |
---|---|

double | 0.0d |

char | ‘u0000’ |

String (or any object) | null |

boolean | false |

## What does double parseDouble mean in Java?

Double parseDouble() method in Java with examples

The parseDouble() method of Java Double class is **a built in method in Java that returns a new double initialized to the value represented by the specified String**, as done by the valueOf method of class Double.

## How do you return a string in Java?

**Using Only StringBuffer to Take and Return String Data in Java**

- public static void main(String[] args) { // take input Scanner scan = new Scanner(System.in); …
- String str = scan. nextLine(); …
- // Now, the return type is also StringBuffer. …
- String reverseStr = new String(reversrSb); …
- for(int i=sb. …
- }