How to change a float into a String in Java?

Question

Is it possible to change a float value to a String? If possible, is it also possible to converting it to a String while rounding the number to the nearest integer?

For example if I have a float such as 2.335 then, can I change it to a String of value "2.335" or "2" (by rounding it)?

Should `2.8` become 2 or 3 (I am assuming 3 but just want to make sure)? — Pshemo, Feb 14 '16 at 10:44
Please search the site before asking questions. Your question is nicely answered by [this](http://stackoverflow.com/questions/7552660/java-convert-float-to-string-and-string-to-float?rq=1) question and [this](http://stackoverflow.com/questions/153724/how-to-round-a-number-to-n-decimal-places-in-java) one. — bcsb1001, Feb 14 '16 at 10:52

Simply Me · Accepted Answer · 2016-02-14T10:55:42.923

Use java Float class:

String s = Float.toString(25.0f);

if you want to round down a number, simply use the Math.floor() function.

float f = 2.9999f;
String s = Float.toString(Math.floor(f));//rounds the number to 2 and converts to String

first line rounds the number down to the nearest integer and the second line converts it to a string.

Another way of doing this is using the String.valueOf(floatNumber);

float amount=100.00f;
String strAmount=String.valueOf(amount);

score 1 · Answer 2 · answered Feb 14 '16 at 10:50

1

To do this you can simply do

float example = 2.335
String s = String.valueOf(Math.round(example));

answered Feb 14 '16 at 10:50

Walshy

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score 0 · Answer 3 · edited May 23 '17 at 12:07

0

To convert a float to a String:

String s = Float.toString(2.335f);

Rounding can be done via

String.format("%.5g%n", 0.912385);

which returns 0.91239

For a more elaborate answer, see Round a number in Java

edited May 23 '17 at 12:07

Community

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answered Feb 14 '16 at 10:50

Fang

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score -1 · Answer 4 · answered Feb 14 '16 at 10:51

Your first requirement can be fullfilled with String.valueOf

float f = 1.6f;
String str = String.valueOf(f);

For roundoff you can use Math.round and not Math.floor. As Math.floor will convert 1.6 to 1.0 and not 2.0 while Math.round will roundoff your number to nearest integer.

How to change a float into a String in Java?

4 Answers4