number-formatting

I need to show numbers in jTable with exact 2 decimal places. To accomplish this I have created a custom cell editor as: public class NumberCellEditor extends DefaultCellEditor { public NumberCellEditor(){ super(new JFormattedTextField()); } public Component getTableCellEditorComponent(JTable table, Object value, boolean isSelected, int row, int column) { JFormattedTextField editor = (JFormattedTextField) super.getTableCellEditorComponent(table, value, isSelected, row, column); if (value!=null){ DecimalFormat numberFormat = new DecimalFormat("#,##0.00;(#,##0.00)"); editor.setFormatterFactory

This question already has an answer here: Set decimal separator when using f:convertNumber 1 answer I want to round value with four decimal places to one decimal place. That is why I use f:convertNumber : <h:outputText value="${current.dayAverage.pressureRelative}" > <f:convertNumber maxFractionDigits="1"/> </h:outputText> The rounding is done right, but the f:convertNumber adds thousand comma separator. I want to remove this separator but I don't know how. I am using Apache MyFaces 2.1 implementation. In the API for f:convertNumber it does not have any attribute to specify thousand separator.

I need to design a function to return negative numbers unchanged but should add a + sign at the start of the number if its already no present. Example: Input Output ---------------- +1 +1 1 +1 -1 -1 It will get only numeric input. function formatNum($num) { # something here..perhaps a regex? } This function is going to be called several times in echo/print so the quicker the better. Update: Thank you all for the answers. I must tell the sprintf based solution is really fast. You can use regex as: function formatNum($num){ return preg_replace('/^(\d+)$/',"+$1",$num); } But I would suggest not

I want to store 6 decimal digits into an array, but when I store it into array it only stores up to 4 decimal digits instead of 6. How can I store up to 6 digits into an array? For example, if e=0.059995; W(l,i)=e; but W(l,i) gives me the result as 4 decimal places disp(W(l,i)) 0.0600 How can I store 6 decimal digits into an array, i.e when I print the array it prints 6 decimal places? disp(W(l,i)) 0.059995 Can anyone help me? Vuwox Matlab on default settings stores up to 15 digits. It only your display format. Have a look at the format command. Or just type at the Matlab command prompt:

I am using number_format to round floats to only 2 decimal digits. The problem is that some of my inputs don't have more than 2 decimals digits to begin with. So the code: number_format($value, 2) Instead of peacefully adding 0 in case it doesn't have enough decimal digits, it raises errors inside Apache log and that's not desirable. So number_format(2.1, 2) or number_format(0, 2) will raise error in Apache log. [Thu Jun 30 17:18:04 2011] [error] [client 127.0.0.1] PHP Notice: A non well formed numeric value encountered in /home/tahoang/Desktop/Projects/weatherData/weatherData.php on line 41

I want to format some numbers in our jsp pages. first i define some resources in my porperties format.number.with2Decimal={0,number,#0.00} ...... Question1: i want to know what is the ‘#’ and '0' means? 0.00,#0.00,##.00,###0.00 who can tell me the differences between them? thanks! Question2: if i define a BigDecimal type in my action BigDecimal number1; Then my page should using a format to show this value, 1.if number1=null then show -NIL- 2.if number1=0 then show -NIL- 3.if number1>0 then show 1.00,3434.98 ..... please ignore number<0 Question3: change number1 to a String, 1.if number1=null

When creating a column of type NUMBER in Oracle, you have the option of not specifying a precision or scale. What do these default do if you don't specify them? NUMBER (precision, scale) If a precision is not specified, the column stores values as given. If no scale is specified, the scale is zero. A lot more info at: http://download.oracle.com/docs/cd/B28359_01/server.111/b28318/datatype.htm#CNCPT1832 The NUMBER type can be specified in different styles : Resulting Resulting Precision Specification Precision Scale Check Comment ―――――――――――――――――――――――――――――――――――――――――――――――――――――――――――――――――