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Receiving error java.lang.RuntimeException: ?+* follows nothing in expression
Posted by Van Glass on 27 August 2007 11:11 PM
When using any of the methods which require a regular expression, a true valid regular expression must be used. The error "java.lang.RuntimeException: ?+* follows nothing in expression" is commonly encountered when trying to use an expression such as "*.txt" or "*" which are not valid regular expressions. Equivalent regular expressions that are valid are as follows:

".*\\.txt" - Gets all files ending in .txt extension

".*" - Gets all files

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