# Uses of Class
org.apache.lucene.store.AlreadyClosedException

Packages that use AlreadyClosedException
Package
Description
org.apache.lucene.index
Code to maintain and access indices.
org.apache.lucene.store
Binary i/o API, used for all index data.

## Uses of AlreadyClosedException in org.apache.lucene.index

Methods in org.apache.lucene.index that throw AlreadyClosedException
Modifier and Type
Method
Description
`protected final void`
IndexReader.`ensureOpen()`
Throws AlreadyClosedException if this IndexReader or any of its child readers is closed, otherwise returns.
`protected final void`
IndexWriter.`ensureOpen()`
Used internally to throw an `AlreadyClosedException` if this IndexWriter has been closed (`closed=true`) or is in the process of closing (`closing=true`).
`protected final void`
IndexWriter.`ensureOpen(boolean failIfClosing)`
Used internally to throw an `AlreadyClosedException` if this IndexWriter has been closed or is in the process of closing.

## Uses of AlreadyClosedException in org.apache.lucene.store

Methods in org.apache.lucene.store that throw AlreadyClosedException
Modifier and Type
Method
Description
`protected final void`
BaseDirectory.`ensureOpen()`
`protected void`
Directory.`ensureOpen()`
Ensures this directory is still open.
`protected void`
FilterDirectory.`ensureOpen()`