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Groovy provides a number of helper methods for working with I/O. All of these work with standard Java Reader/Writer and InputStream/OutputStream and File and URL classes.

The use of closures allows resources to be processed ensuring that things are properly closed irrespective of exceptions. e.g. to iterate through each line of a file the following can be used...

If for whatever reason the println() method were to throw an exception, the eachLine() method ensures that the file resource is correctly closed. Similarly if an exception occurs while reading, the resource will be closed too.

If you wish to use a reader/writer object or an input/output stream object there are helper methods to handle the resource for you via a closure - which will automatically close down any resource if an exception occurs. e.g.


Further Information



Results of your search request can come from various sources: the Groovy website itself, the JIRA issues, the API documentation, as well as a few other interesting Groovy-related blogs.

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