## Core Java IO

This module contains articles about core Java input and output (IO)

### Relevant Articles: 
- [How to Read a Large File Efficiently with Java](http://www.baeldung.com/java-read-lines-large-file)
- [Java – Write to File](http://www.baeldung.com/java-write-to-file)
- [Java – Directory Size](http://www.baeldung.com/java-folder-size)
- [File Size in Java](http://www.baeldung.com/java-file-size)
- [How to Copy a File with Java](http://www.baeldung.com/java-copy-file)
- [Java – Append Data to a File](http://www.baeldung.com/java-append-to-file)
- [FileNotFoundException in Java](http://www.baeldung.com/java-filenotfound-exception)
- [How to Read a File in Java](http://www.baeldung.com/reading-file-in-java)
- [Zipping and Unzipping in Java](http://www.baeldung.com/java-compress-and-uncompress)
- [Read a File into an ArrayList](https://www.baeldung.com/java-file-to-arraylist)
- [Reading a CSV File into an Array](https://www.baeldung.com/java-csv-file-array)
- [How to Get the File Extension of a File in Java](http://www.baeldung.com/java-file-extension)
- [Getting a File’s Mime Type in Java](http://www.baeldung.com/java-file-mime-type)
- [Create a Directory in Java](https://www.baeldung.com/java-create-directory)
- [How to Write to a CSV File in Java](https://www.baeldung.com/java-csv)
- [List Files in a Directory in Java](https://www.baeldung.com/java-list-directory-files)
- [How to Avoid the Java FileNotFoundException When Loading Resources](https://www.baeldung.com/java-classpath-resource-cannot-be-opened)
- [[More -->]](/core-java-modules/core-java-io-2)