How to remove a trailing zero from a string

Question

How to remove trailing zero in java for a String

below is my string values,
908.10001
508.1000
405.000
302.0000
15.880

I want the output like
908.10001
508.1
405.0
302.0
15.88

Read [Remove trailing zero in Java](http://stackoverflow.com/questions/14984664/remove-trailing-zero-in-java) — Braj, Jun 13 '14 at 18:46
or read this --> http://stackoverflow.com/questions/16984462/how-to-remove-trailing-zeros-from-a-string — Du6e, Jun 13 '14 at 18:49

Braj · Accepted Answer · 2014-06-13T21:24:53.883

2

Very simple solution:

String string1 = Double.valueOf("302.1000").toString();  // 302.1
String string2 = Double.valueOf("302.0000").toString();  // 302.0
String string3 = Double.valueOf("302.0010").toString();  // 302.001

edited Jun 13 '14 at 21:24

answered Jun 13 '14 at 18:56

Braj

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Thanks @Braj, Love this answer! – Marjer Jun 13 '14 at 19:02
@Marjer: If you don't want to convert to and back from double then you could try `System.out.println(val.replaceAll("(\\..+?)(0*)$", "$1"));`. – Bhesh Gurung Jun 13 '14 at 19:05

score 0 · Answer 2 · answered Jun 13 '14 at 18:49

0

I think String replaceAll method can take a regex in parameter, so it can do what you want. i might look something like this:

String s = s.indexOf(".") < 0 ? s : s.replaceAll("0*$", "").replaceAll("\\.$", "");

answered Jun 13 '14 at 18:49

ovie

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That doesn't give the desired result though, e.g. 302.0000 should become 302.0 – Robby Cornelissen Jun 13 '14 at 18:52
1

It's not workin as excepted, prints 100 for 100.000 – Marjer Jun 13 '14 at 18:59
Oh yes indeed... I did not noticed that requirement. Then you can used Braj solution. – ovie Jun 13 '14 at 19:01
Not working as suggested. – Braj Jun 13 '14 at 19:01

score 0 · Answer 3 · answered Jun 13 '14 at 18:53

You'll have to address trailing non-zeros too. Try BigDecimal with a scale of 1 and ROUND_HALF_UP rounding (if that works for you):

BigDecimal bd = new BigDecimal("302.0000");
System.out.println(bd.setScale(1,BigDecimal.ROUND_HALF_UP).toString()); //outputs 302.0

score 0 · Answer 4 · answered Jun 13 '14 at 19:18

0

You could construct a BigDecimal and use stripTrailingZeros().

BigDecimal bd = new BigDecimal("302.00000").stripTrailingZeros();
System.out.println(bd.toString());

answered Jun 13 '14 at 19:18

Elliott Frisch

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How to remove a trailing zero from a string

4 Answers4