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Java Data Type Q&A
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19.Number Format
Java Data Type Q&A » decimal » digit 

1. How can I encrypt/decrypt 12-digit decimal numbers to other ones, using a password and Java?    stackoverflow.com

I have already read Using Java to encrypt integers and Encrypting with DES Using a Pass Phrase. All I need is a simple Encrypter which transforms a 12 digit ...

2. nondecimal with 3 digit decimal without rounding in java    stackoverflow.com

I have a string in the formt "123456670007777777+" with digits and sign(+ or -). Total length--->19 I want to convert this string into non-decimal with 3 precision except sign. please provide samples for converting ...

3. Number of decimal digits in a double    stackoverflow.com

I need the number of integer digits and the number of digits after decimal in a number like 234.12413 in Java. Please help.

4. method to find # of digits after decimal    coderanch.com

Is there any method that will return the number of digits after decimal in double number. eg, I want to write a method that takes "double number " as input.. I want to know if that number/parameter has any decimal numbers.. ?and how many ? if parameter is '3' , method should return '0' .. if parameter is 3.23, it should ...

5. How to count the number of digits after decimal point in java?    coderanch.com

Thanks. is there a simple function in java doing that already? for ex: reverse() function for strings already exits.. similary, i was expecting some java api to fetch the decimal part from that given double value..from which I can do my length() operator. makes sense? [ March 21, 2007: Message edited by: Laxi Rara ]

6. I am trying to only display at most two decimal digits.(rounding)    coderanch.com

I am writtng a java app that computes an energy bill, but the computations are only supposed to display two decimals digits at the most. here is my code, I am trying to find a way to only display the two digits after the decimal in the answer (print statement). I was thinking that I could use a string method or ...

7. Decimal digits    coderanch.com

8. How to set decimals to only 2 digits in Doubles?    coderanch.com

Hello, I am have the following method (pseudo code) which sums up totals: public String getSum() { // For Loop { Double totalDollarAmount = 0.0; Double amount = transactionTotalAmount.doubleValue(); totalDollarAmount = totalDollarAmount + amount; } // For Loop ending return totalDollarAmount.toString(); } Sometimes, my method returns values such as this: 25.00 125.00024 131.35001 33.0 How to I set up it so ...

9. HELP! How to output the number of digits on each side of decimal    forums.oracle.com

I'm in a beginning Java class, this is only our 3rd program. I'm not very familiar with the language... I just know from our instructions that this is what we are supposed to do. Thus far, my program is correct... I just can't figure out how to display the numbers on each side of the decimal using the indexOf() and substring() ...

10. I want real numbers with specific number of decimal digits    forums.oracle.com

Hello! I'm not quite familiar yet with the classes of java, so I encounter some elementary problems! My problem is exactly the one written in the title of the post! I've done a little searching in java API and the most relative thing I found is the one that follows: DecimalFormat.setMaximumFractionDigits(digits) Is this what I am looking for? And If yes, ...

11. I am trying to only display at most two decimal digits.    forums.oracle.com

I didn't mean I wanted to bash the newbies. What I meant was I would tell them that DecimalFormat is the class they need and then expect them to find it for themselves in the API (ie NOT provide the link). I wouldn't just say "There is a class in the API go find it for yourself" without giving them the ...

12. After decimal i am missing one digit if the digit is 0.    forums.oracle.com

Hi All, in the data base the value is stored as 200.90 if I get the data from the data base i am receiving it as 200.9 only. If the value stored is 200.96 then i am getting the correct value. It is happening only when the second digit is 0. any one can help me?

13. Digits after the decimal    forums.oracle.com

15. Round up problem when restricting Digits after Decimal point.    forums.oracle.com

Hi, I am trying to restrict digits after deicmal point using BigDecimal. I want to restrict it to 4 digits after decimal point and while doing this i want the 4th digit to roundup depending on 5th digit. For this i'm using following code. BigDecimal bd = new BigDecimal(num); bd = bd.setScale(4,BigDecimal.ROUND_UP); When i set num = 7.8213 it gives bd ...

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