Package org.apache.poi.poifs.nio

package org.apache.poi.poifs.nio

Class	Description
ByteArrayBackedDataSource	A POIFS DataSource backed by a byte array.
CleanerUtil	This is taken from Hadoop at https://issues.apache.org/jira/browse/HADOOP-12760 and https://github.com/apache/hadoop/blob/trunk/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/util/CleanerUtil.java Unfortunately this is not available in some general utility library yet, but hopefully will be at some point.
CleanerUtil.BufferCleaner	Pass in an implementation of this interface to cleanup ByteBuffers.
DataSource	Common definition of how we read and write bytes
FileBackedDataSource	A POIFS DataSource backed by a File