number-formatting

I have a double whose value is 10,000,000.00 (ten millions). I have to convert it to a String . When using the method toString I am getting the String "1.0E7" which is correct following the specification. Unfortunately I need the String "10,000,000.00" (or the equivalent depending on the locale). How can achieve this? Try either NumberFormat http://java.sun.com/javase/6/docs/api/java/text/NumberFormat.html DecimalFormat http://java.sun.com/javase/6/docs/api/java/text/DecimalFormat.html In addition to the formatter, you might consider using the java.math.BigDecimal class to represent numbers

Checking if it can be an int is easy enough -- just check that every digit is between '0' and '9' . But a float is harder. I found this , but none of the answers really work. Consider this code snippet, based on the top (accepted) answer: float f; int ret = sscanf("5.23.fkdj", "%f", &f); printf("%d", ret); 1 will be printed. Another answer suggested using strpbrk , to check if certain illegal characters are present, but that wouldn't work either because 5fin7 wouldn't be legal, but inf would. Yet another answer suggested checking the output of strtod. But consider this: char *number = "5.53

I'm using iReport 2.0.2 . I have a problem with formatting numeric data after generating report with help of Excel exporter. For example, the 85110057689 string is showing as 8.51100e+10 in Excel file (as result of using "preview in Excel" button in iReport ). Please suggest how to change the format to the simple (not scientific). Naim Nsco We can use net.sf.jasperreports.export.xls.detect.cell.type property for solving issue. The quote from documentation: net.sf.jasperreports.export.xls.detect.cell.type Property whose value is used as default state of the IS_DETECT_CELL_TYPE export flag.

I have a certain cell of size 400x1. It basically consists of numbers in the form of string. I mean when I do mycell{1} it gives result '1' So you can see the number 1 is in the form of string. How can I convert this into a numeric array? Like this if the size(mycell) is 400x1 . . . . . str2num(cell2mat(mycell)) ... or like this if the size is 1x400 str2num(cell2mat(mycell')) However, this will cause problems if any of your strings contain a different number of characters, i.e. mycell{1} = '2' mycell{2} = '33' If you have a case like this, str2double(mycell) ...seems to handle this ok as

in my code i use integers multiplied by 100 as decimals (0.1 is 10 etc). Can you help me to format output to show it as decimal? int x = 100; DecimalFormat df = new DecimalFormat("#.00"); // Set your desired format here. System.out.println(df.format(x/100.0)); I would say to use 0.00 as format: int myNumber = 10; DecimalFormat format = new DecimalFormat("0.00"); System.out.println(format.format(myNumber)); It will print like: 10.00 The advantage here is: If you do like: double myNumber = .1; DecimalFormat format = new DecimalFormat("0.00"); System.out.println(format.format(myNumber)); It will