Apache Commons IO Tutorial

What is Apache Commons IO?

The Apache Commons IO are the components of the Apache Commons which are derived from Java API and provides various utility classes for common operations for File IO covering wide range of use cases. It helps avoid writing boilerplate code. This tutorial covers most of the topics required for a basic understanding of Apache Commons IO and to get a feel of how it works.

This Apache Commons IO tutorial is based on the latest Apache Commons IO 2.20.0 version.

Who Should Learn Apache Commons IO

This tutorial is tailored for readers who aim to understand and utilize Apache Commons IO utilities. In this tutorial, we'll cover all the ways of using Apache Common IO which helps in solving the common problems developers/users face during development while dealing with I/O.

Apache Commons IO Features

pache Commons IO library provides various utility classes for common operations for File IO covering wide range of use cases. It helps avoid writing boilerplate code. Following are some of the important classes provided by Apache Commons IO Library −

• IOUtils − Provides utility methods for reading, writing and copying files. The methods work with InputStream, OutputStream, Reader and Writer.

• FilenameUtils − Provides method to work with file names without using File Object. It works on different operating systems in similar way.

• OrFileFilter − Provides conditional OR logic across a list of file filters. Returns true, if any filters in the list return true. Otherwise, it returns false.

• AndFileFilter − Provides conditional and logic across a list of file filters. Returns false if any filters in the list return false. Otherwise, it returns true.

• FileAlterationObserver − Represents a thread that spawns a monitoring thread triggering any registered FileAlterationObserver at a specified interval.

• FileAlterationMonitor − Ordered Maps retain the order, in which elements are added in.

• SizeFileComparator − Compare the size of two files.

• LastModifiedFileComparator − Reference map allows key/values to be garbage collected under close control.

• TeeOutputStream − Sends output to two streams.

• CountingOutputStream − Counts the number of bytes passed through the stream.

Prerequisites to Learn Apache Commons IO

To maximize the benefits of this tutorial, readers should have a basic understanding of Java programming. Knowledge of I/O Operations, File handling will enhance comprehension.

Apache Commons IO Jobs and Opportunities

Apache Commons IO offers many job opportunities in the field of Development. Companies use Apache Commons IO where I/O Operations are used heavily, so knowing how to work with it can help you get jobs in tech and research. There are also chances to contribute to open-source projects and collaborate with others in the Apache Commons IO community.