The Apache Commons IO library is a set of package library which is used to provide the various IO functionality in a Java based application. This library is developed and maintained by the Apache foundation a name of the library indicated. Following functionality is provided by the library:

• Utility Library for common functionality - The Utility library of the Apache commons provides the static method for performing the common IO tasks in a Java program.

• Classes for reading from Input stream.

• Classes for writing to the Output stream

• Various types of filters implementation classes

• Many implementation of the java.util.Comparator for easing the programming tasks

• There various implementations of java.util.Comparator for files

• There is also a File Monitor components for handling the events of the file systems in java program

So there many uses of the Apache Commons IO library.

You can use the following code to included the library in maven based project:

<dependency>
    <groupId>org.apache.commons</groupId>
    <artifactId>commons-io</artifactId>
    <version>1.3.2</version>
</dependency>

Following code is for using it in Ivy:

<dependency org="org.apache.commons" name="commons-io" rev="1.3.2"/>

For Grape:

@Grapes(
    @Grab(group='org.apache.commons', module='commons-io', version='1.3.2')
)

For Gardle:

'org.apache.commons:commons-io:1.3.2'

For Buildr:

'org.apache.commons:commons-io:jar:1.3.2'

For SBT:

libraryDependencies += "org.apache.commons" % "commons-io" % "1.3.2"

For Leiningen:

[org.apache.commons/commons-io "1.3.2"]

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