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Stripes' philosophy when it comes to formatting is pretty simple:

Formatting should be easy (duh)
Formatting should occur on the page, not in the ActionBean or business code
Formatting should be localized
Formatting should be easy to extend

...

Now all that's left is implementing your own Formatter class. This is a relatively simple operation. Remember that as your inputs you will receive an object to be formatted, a Locale, a formatType and a formatPattern. You may choose to use, or ignore as many of these parameters as you see fit. The following is an example of a custom Formatter for formatting social security numbers:

Code Block

language	java
title	"SsnFormatter.java"

 
public class SsnFormatter implements Formatter<Ssn> { 

	private String formatType; 

	/** Sets the format type to be used to render Ssns as Strings. */ 
	public void setFormatType(String formatType) { 
		this.formatType = formatType; 
	} 

	public void setFormatPattern(String formatPattern) { 
		// SsnFormatter doesn't use format-pattern 
	} 

	public void setLocale(Locale locale) { 
		// Ssn's are US specific, so no locale support either 
	} 

	/** Sets defaults if a formatType was not supplied. */ 
	public void init() { 
		if (this.formatType == null) { 
			this.formatType = "lastfour"; 
		} 
	} 

	/** Formats the Ssn supplied as a String. */ 
	public String format(Ssn ssn) { 
		if ("lastfour".equals(this.formatType)) { 
			return "###-##-" + ssn.getLastFourDigits(); 
		} 
		else if ("allnine".equals(this.formatType)) { 
			return ssn.getDigits(0,3) + "-" + 
ssn.getDigits(3,5) + "-" + 
ssn.getLastFourDigits(); 
		} 
	} 
}

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