java format number with commas

For example:12345 format to 12,345.0012345.6 format to 12,345.6012345.67 format to 12,345.67Leave only two decimal places.After returning, I wrote a Formatting Function. The number of decimal places can be controlled and automatically rounded. The Code is as follows:Copy codeThe Code is as follows:Function fmoney (s, n

Java Programming Practice: Determine whether the Java file name is correct, determine whether the mailbox format is correct, and count the number of times a character in a specified string appears1. Determine whether the Java file name is correct and whether the mailbox

number of full three digits in the back is taken out$i= 0; while($istrlen($SR)){$rvalue=$rvalue.‘,‘.substr($SR,$i, 3);//three-bit three-bit remove and merge, separated by commas$i=$i+ 3;}$rvalue=$SL.$rvalue;$rvalue=substr($rvalue, 0,strlen($rvalue)-1);//remove the last comma$rvalue=Explode(‘,‘,$rvalue);//decomposition of an arrayif($rvalue[0]==0){Array_shift($rvalue);//if the first element is 0, the first

For example: 12345 formatted as 12,345.00 12345.6 formatted as 12,345.60 12345.67 formatted as 12,345.67 Leave only two decimal places. When I came back, I wrote a format function. You can control the number of decimal digits and auto-rounding. Front desk:Number of decimal places:SelectID= "num"> optionvalue= "2">2option> optionvalue= "3">3option> optionvalue= "4">4

followed by N input blocks. Each input block was in the format indicated in the problem description. There is a blank line between input blocks.The output format consists of N output blocks. There is a blank line between output blocks.Sample Input11234567890123456789012345678901234567890123456789012345678901234567890123456789012345678900Sample Output370370367037037036703703703670Sourceeast Central North Am

Convert into secondsThe date class has a gettime () that can swap back the number of seconds, for example: Public class datetosecond{publicstaticvoidnew Date ( System.currenttimemillis ()); System.out.println (Date.gettime ());}}Convert to string formatI. Get the current system time and date and format the output:Import java.util.Date; Import Java.text.SimpleDateFormat; Public class nowstring {publicstati

Verify email format in Java Import java. util. RegEx. matcher;Import java. util. RegEx. pattern; Public class registercheck { /** * Verify that the entered email format is correct. * @ Param email * @ Return is legal */ Public static Boolean emailformat (string emai

Recently in the processing of text strings, no row of data are separated by commas, each field value is usually enclosed in double quotation marks, but some field values also contain commas, and even some fields do not have double quotation marks, this is a bit troublesome to split upHere's a look at my solution, if anyone has a better way, welcome to join the discussion O (∩_∩) o~/***

When adding data to jtable Java. Lang. illegalargumentexception: cannot format given object as a number Error. 1) Check the Add process. Convert all data types to strings and then add them. In the program, use float. tostring () to convert float to string. 2) Check the Data Type of the jtable column, which can be string or float. Cause: the data type to be a

Original: http://www.open-open.com/code/view/1456919325625ImportJava.util.Iterator;ImportJava.util.Map;ImportJava.util.Set;ImportJava.util.TreeMap;/** Count the number of occurrences of each letter in the ABACBACDADBC, the output format is: A (4) B (3) C (3) d (2) * * The reason for selecting TreeMap is: Key is not duplicated and sorted out in order * idea: * 1. Convert string Abacbacdadbc to Character arra

Character Description Example Output C Currency String. Format("{0: C3}", 2) $2.000 D Decimal String. Format("{0: D3}", 2) 002 E Scientific notation 1.20e + 001 1.20e + 001 G General String. Format("{0: g}", 2) 2 N Number s

) ???.??? 5.255.3 5 1/45 3/10(Score aligned) # ??? /??? display thousand separators to display commas as thousands separators or to scale numbers by multiples of 1,000, include the following separators in the number format. , (comma) Displays the thousands separator in a

First, use the built-in function C Characteristics: Regardless of the form of expression ( For example "123,456.123,456", "123 456.123 456", "000 123 456.123 456 000", "123,456.123 456", "1,2345,6.123456") , as long as the decimal separator is '. ' it can be converted into a string form that the computer can recognize, and it is all 123456.123456, and the computer is processing without those so-called thousand separators (spaces or commas), and th

("#. ##### E0 "). format (c); // 2.99792e8 // displays the scientific notation of two integers, and takes four decimal places. out. println (New decimalformat ("00. #### E0 "). format (c); // 29.9792e7 // each three digits are separated by commas. out. println (New decimalformat (",###"). format (c); // 299,792,458 //

Java specifies a date, such as the number of weeks, the number of weeks, and the number of weeks in java.Public static void main (String [] args) throws ClassNotFoundException,IOException, ParseException {SimpleDateFormat dateFormatter = new SimpleDateFormat ("yyyy-MM-dd ");String str = "2015-2-8 ";System. out. println

Quick Start introduction to the powerful Java String. format (), javastring. format Preface Since Java 5.0, the String class has added a powerful String formatting method format (). There are still not many people using this method till now, which is a waste. This article ta

names within an object shoshould be unique. object = begin-object [member * (value-separator member)] End-object member = string name-separator value 2.3. arrays an array structure is represented as square brackets surrounding zero or more values (or elements ). elements are separated by commas. array = begin-array [value * (value-separator value)] End-array 2.4. numbers the representation of numbers is similar to that used in most programming ages.

notation and hexadecimal notation) ''Plus space before a positive value and negative value plus a negative number (generally only applicable to the 10-digit system. If the object is biginteger, it can be used in the 8-and 16-digit systems) The '0' result is filled with zero. ',' Is only applicable to the 10-digit system. Each three digits are separated by commas (,). '(If the parameter is a negative