Exponents in java

Question

Are there any built in java methods where I can convert this "1.00E-7" to "0.0000001"? I am using BigDecimal as datatype by the way. I am really stuck in here. any help would be appreciated.

`1.00E-7` and `0.0000001` are numerically equal. Do you mean changing the `String` representation? You should also include the relevant code in your question. — Jonny Henly, Mar 16 '16 at 04:03
Possible duplicate of [Converting exponential value in java to a number format](http://stackoverflow.com/questions/13563747/converting-exponential-value-in-java-to-a-number-format) — prasad, Mar 16 '16 at 04:04
@prasad that question does have multiple answers, but none are accepted and each answer has a comment from OP saying the desired results were not achieved. Not saying it isn't a possible duplicate or that this question isn't a duplicate of another SO question. — Jonny Henly, Mar 16 '16 at 04:11

Jonny Henly · Answer 1 · 2016-04-24T06:19:14.553

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Use BigDecimal#toPlainString(), per the documentation:

toPlainString() - Returns a string representation of this BigDecimal without an exponent field.

BigDecimal's documentation lists three to*String() methods: The regular toString() method uses scientific notation (1.00E-7), while toEngineeringString() uses engineering notation (100E-9) and toPlainString() uses no notation (0.000000100).

edited Apr 24 '16 at 06:19

answered Mar 16 '16 at 04:23

Jonny Henly

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Yes Jonny you are right . I posted almost the same time :) – Raghu K Nair Mar 16 '16 at 04:25

Raghu K Nair · Accepted Answer · 2016-03-16T04:24:46.987

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    BigDecimal bigD = new BigDecimal("1.00E-7"); 
    System.out.println(bigD.toPlainString());

edited Mar 16 '16 at 04:24

answered Mar 16 '16 at 04:12

Raghu K Nair

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Oh..yea my apologies yea the answer is not correct. I have not read the question clearly. – Raghu K Nair Mar 16 '16 at 04:20
Nope. You're right there! Thanks a lot. That saved my day :) – JanLeeYu Mar 16 '16 at 05:19

score 1 · Answer 3 · answered Mar 28 '16 at 08:39

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Use BigDecimal#toPlainString()

answered Mar 28 '16 at 08:39

Fred

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Exponents in java

3 Answers3