I have a vlt template as follows:
$display.printf("Total: %4.2f s", $toto.tata)
Which display :
Total: 11.2 s
But I want to display it with a comma separator for the decimal number:
Total: 11,2 s
How can I change the decimal format ?
I cannot change the JAVA code..
Thanks for your help
I don't know the Java class of the $display object, but it's the object in question which formats the number, not Velocity itself, so if this object doesn't offer the ability to specify a locale (as do String.format() and PrintWriter.printf()), you will have to resort of some hack, like:
$display.printf("Total: %4.2f s", $toto.tata).replace('.',',')
Related
I am new to C# having used Java.
I am looking to output an expression of 4.5 - 2.7... In Java I would simply write System.out.format("%.2f\n", 4.5 - 2.7);
In C#, I have used Console.WriteLine(4.5 - 2.7); but I am looking to print 2 decimal places.
Could someone be so kind as to explain how I achieve this?
Use String.Format (Link To Documentation)
Use the format {Parameter Number:Decimal Places}
Console.WriteLine(String.Format(" We are going to format 15.6345 as {0:0.00}",15.6345));
Test it here!.
Good luck!
EDIT / Clarification
By Parameter Number, String.Format takes all other inputs after the first input of a string to be values to format and place into the string.
Every time {x:yyz} appears in the string, System.String.Format will format x in the style yyz, where x is the index of the value passed in.
In my example above, 15.6345 is x, and the format 0.00 is yyz.
You could format 2 numbers or repeat one by going:
Console.WriteLine(String.Format(" We are going to format 15.6345 as {0:0.00} , the format 3.123 as 3.1 {1:0.0} , then repeat 15.6345 as 15.6 {0:0.0}",15.6345,3.123));
I'm new to code in Android Studio and when i set a integer in a text like this:
textview.setText(String.format("%d",1));
This code give me back a warning:
Implicitly using the default locale is a common source of bugs: Use String.format (Locale,...)
What is the correct code for put an integer in a .setText?
I founded more question on stackoverflow but don't apply to this.
What is the correct code for put an integer in a .setText?
You simply need to convert your int as a String, you can use Integer.toString(int) for this purpose.
Your code should then be:
textview.setText(Integer.toString(myInt));
If you want to set a fixed value simply use the corresponding String literal.
So here your code could simply be:
textview.setText("1");
You get this warning because String.format(String format, Object... args) will use the default locale for your instance of the Java Virtual Machine which could cause behavior change according to the chosen format since you could end up with a format locale dependent.
For example if you simply add a comma in your format to include the grouping characters, the result is now locale dependent as you can see in this example:
System.out.println(String.format(Locale.FRANCE, "10000 for FR is %,d", 10_000));
System.out.println(String.format(Locale.US, "10000 for US is %,d", 10_000));
Output:
10000 for FR is 10 000
10000 for US is 10,000
I am using freemarker and trying to display numbers in this format: $3,343,434.00 for example. This was easily taken care of by using ${total?string.currency} (assuming "total" is some number).
However, when I have negative numbers, it's showing them like this: ($343.34) instead of this: -$343.34. I need the negative sign instead of the parenthesis. Is there a way I could customize the formatting so it does everything that the string.currency did but replace the negative value behavior? I am relatively new to freemarker, so detailed responses are appreciated!
You can also try ?string(",##0.00"). However in this case you need to explicitly add $ and - sign would be after $ in case of negative numbers.
<#local total = 3343434/>
$ ${total?string(",##0.00")} //$ 3,343,434.00
<#local total = -3343434/>
$ ${total?string(",##0.00")} //$ -3,343,434.00
OR in case if you want what was expected you can replace the strings.
<#local total = -3343434/>
<#local total = "$ " + total?string(",##0.00")/>
${total?replace('$ -','- $')} //- $3,343,434.00
Update: Since FreeMarker 2.3.24 you can define named custom number formats, which can be an alias to a number format pattern (or even a formatter implemented in Java, but that level of flexibility isn't needed in this case). So add a custom number format called "money" as an alias to "¤,##0.00" to the FreeMarker configuration, and then you can write something like ${total?string.#money}. See: http://freemarker.org/docs/pgui_config_custom_formats.html
Currently FreeMarker just uses the formatting facility of the Java platform, so it's only as configurable as that (assuming you want to use ?string and ?string.somethingPredefiendHere). Which is not much... but, in general, the formatting categories provided by the Java platform is not fine-gradient enough anyway, I mean, you don't have application-domain categories like, price-of-product, a salary, a price on the stock, etc. (This demand is more frequent with non-currency numbers though.) So I think, generally, you want to make a formatter function, that you can use like ${salary(someNumber)}, ${price(someNumber)}, etc. Those functions can be implemented in a commonly #included/#imported template like a #function or in Java by using #assign salary = 'com.example.SalarayMethod'?new() in place of #function, where com.example.SalarayMethod is a TemplateMethodModelEx.
How about taking a mod of your number, convert it to the required string format and finally add a '-' prefix to the final string. You can retain the default format in just two steps.
Freemarker uses the currency formatting provided by the Java platform.
It requires a little tweaking of the DecimalFormat returned by NumberFormat.getCurrencyInstance() (which is what is called when you call .currency). You can see examples of it here.
However, that said it will likely be more effective for you to create a macro in freemarker to call which will handle your specific formatting.
Sorry for not having an example of what that macro would look like, but it's a good starter into macros in freemarker since you are just learning.
You might investigate if you can supply a custom format using the exposed configuration for number formats that will meet your needs.
If you want to maintain the default currency formatting (in case you need to use a locale other than '$'), you can just replace the parentheses like so:
${transaction.amount?string.currency?replace("(","-")?replace(")","")}
This will work without error regardless of if a number is negative or positive.
TIP: Make sure the number is actually a number with the ?number directive before converting to a currency format
I'm doing some javascript work inside a ColdFusion shopping cart, and I need to be able to format some numbers in js which will mimic LScurrencyFormat() in CF.
Currently we are taking the first (left,1) character of a formatted string but that doesn't work for currencies like Yen or Euro which come after the number, not to mention any multiple character currency symbols.
What I need to find, based on the current CF locale, is
currency symbol
decimal delimiter (, or .)
leading or trailing (before or after the number)
From there i can run my own js formatting to make the formatted numbers come out as expected on the page.In php we can use localeconv() to get these values... how can I find them in CF?
I am not aware of any built in functions. However, you can obtain the first two items from java. As far as the third, the closest suggestion I have seen is to parse the localized number pattern and detect the position of the currency sign ie \u00A4. Note: It is just a mask placeholder. It is not the same as the actual currency symbols like "$" or "£".
Edit:
As discussed in the comments, getLocale() returns some user friendly name which unfortunately does not quite line up with java's. The easiest way to get the java locale object for the current request is using getPageContext().getResponse().getLocale().
<cfscript>
// Get the current locale as a java object
javaLocale = getPageContext().getResponse().getLocale();
// get numeric settings for that locale
currency = createObject("java", "java.text.DecimalFormat").getCurrencyInstance(javaLocale);
symbols = currency.getDecimalFormatSymbols();
// 164 => decimal code point for currency sign
currencyPattern = currency.toLocalizedPattern();
result.hasTrailingCurrencySymbol = currencyPattern.indexOf(javacast("int", 164)) > 0;
result.currencySymbol = symbols.getCurrencySymbol();
result.decimalSeparator= symbols.getDecimalSeparator();
WriteDump(result);
</cfscript>
getLocale() returns the old cf5 style locale "names" but only for those locales supported by cf5. if you dump out the supported locales (Server.Coldfusion.SupportedLocales) you'll see the goofy old cf5 style locale names as well as the core java locale IDs (ie both "Chinese(China)" and "zh_CN"). if your locale wasn't one of the cf5 supported locales you should see the core java locale ID (ie th_TH for thai, thailand). see
http://cfbugs.adobe.com/cfbugreport/flexbugui/cfbugtracker/main.html#bugId=82474
as a small tweak to leigh's answer, you should also be concerned with the currency/locale's fraction digits. for instance in normal practice, you can't have part of a yen (ie 1.1 isn't quite kosher). you can get that info from the Currency class's getDefaultFractionDigits() method:
result.fractionDigits=currency.getDefaultFractionDigits();
I am getting a java object in my velocity template. The object has a double value which I want to format to 2 decimal places and display it in my template.
The class for which im getting an object is something like this
Class Price
{
double value;
String currency;
}
In my velocity template, im getting the value like this
$price.value
but I need to format it to 2 decimal places before displaying it.
I want to convert
23.59004 to 23.59
35.7 to 35.70
3.0 to 3.00
9 to 9.00
Please tell me how can I do it in velocity template? I searched a lot for this and found that I can use velocity tools, but there are no examples related to it? and can i use velocity tools in templates?
Velocity tools are expected to be used in Velocity templates; essentially they are objects added to the variables available in a template so that you can use $numberTool.format("#0.00", $val) or similar. If none of the available tools don't fit your needs, simply create a POJO and add it to the template.
To make it working you also should add the following maven dependency:
<dependency>
<groupId>org.apache.velocity</groupId>
<artifactId>velocity-tools</artifactId>
<version>2.0</version>
</dependency>
and write following code:
context.put("numberTool", new NumberTool());
#set($String = "abc")
$String.format("%.2f", $val)
$val has to be Double or Float in this case...
formatCurrency($value). This is good java velocity code to format a number to currency format.
Use the MathTool from the VelocityTools project.
$math.roundTo(2, $val)
Solution by just using the Java Formatters: (without additional libraries)
NumberFormat decimalFormat = new DecimalFormat("#.00");
velocityContext.put("decimalFormat", decimalFormat);
Int Number: $decimalFormat.format($obj.intNum)
And here is how the timestamp is formatted to human readable date.
DateFormat DATETIME_FORMAT = new SimpleDateFormat("dd/MM/yyyy HH:mm:ss");
velocityContext.put("datetimeFormat", DATETIME_FORMAT);
Timestamp to Date: $datetimeFormat.format($obj.timestamp)
$numberTool.format("#0.00", $val)
A better way to do things besides using $numberTool.format is to use one of the MessageFormat-based tool classes that do more than just numbers. For example, we use MessageTool which is Struts-specific, but you can use something similar like ResourceTool instead:
resources.properties
some.key=The price is currently {0,number,$#.##}
template.vm
<p>
$msg.get('some.key', 'resources', [$price])
</p>
This way, you get the number in context and not just all by itself. In a non-English language, the number might be more appropriate to come to the left of the text, or in the middle, or whatever. This gives you much more flexibility than simply formatting the number all by itself.