Split Pascalcase String

Do you ever need to split a camel case or pascal case string to a set of words? This can be achieved simply by regular expressions in Java as well as C#. The following code is for Java:

String camelCase = "StructuralDesignPattern";
StringBuffer label = new StringBuffer(camelCase + 10);
java.util.regex.Pattern p = java.util.regex.Pattern.compile("[A-Z][a-z]+");
java.util.regex.Matcher m = p.matcher(camelCase);
while ( m.find() )
label.append( m.group() + " ");
System.out.println(camelCase + " >> " + label.toString());

[ Note: this does not work for all test cases. You may also want to try regexp as “[A-Z][a-z]+”, for matching any continues uppercase letters too (e.g. AnkitJainFROMIndia >> Ankit Jain FROMIndia) ]

Jon Galloway points out a tricky method for C#.

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