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Groovy provides a number of helper methods<=
/a> for working with I/O. All of these work with standard Java Reader/Write=
r and InputStream/OutputStream and File and URL classes.
The use of c= losures allows resources to be processed ensuring that things are properly = closed irrespective of exceptions. e.g. to iterate through each line of a f= ile the following can be used...
If for whatever reason the println() method were to throw an ex= ception, the eachLine() method ensures that the file resource is c= orrectly closed. Similarly if an exception occurs while reading, the resour= ce will be closed too.=20
If you wish to use a reader/writer object or an input/output stream obje= ct 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.=20 =20