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and welcome to context free where we talk about programming languages today i want to talk about cleaning up resources and the example is going to be a little more complicated than usual for me because its hard to see the interesting issues without getting a little bit deep into the weeds im going to start with an example in java that actually works with real resources in this case files and i have a main here at the bottom which for convenience of avoiding calling everything static instantiates a class instance and then uses it all we do is prepare an output file by first pre-pending the contents of other files then we do whatever we want to with that file before closing it and the traditional way in java to ensure that you get your resources closed even if this might throw an exception is to put whatever your resource closing is into a finally block so to see prep out over here we open a writer to the out name then we loop through the input names and write the contents to the outp
