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In this tutorial, we discuss cleaning up resources in programming languages, specifically focusing on Java. The example involves working with real resources, such as files. The main function instantiates a class instance to prepare an output file by combining contents from other files. To ensure proper resource closure, the traditional approach in Java is to use a finally block, even if exceptions may occur. In this case, we open a writer, loop through input names, write contents to the output file, and follow proper resource management practices.
