Uses of Class
java.io.Writer

Packages that use Writer 
Package Description
java.io
Provides for system input and output through data streams, serialization and the file system.
java.nio.channels
Defines channels, which represent connections to entities that are capable of performing I/O operations, such as files and sockets; defines selectors, for multiplexed, non-blocking I/O operations.
java.sql
Provides the API for accessing and processing data stored in a data source (usually a relational database) using the Java™ programming language.
java.util
Contains the collections framework, some internationalization support classes, a service loader, properties, random number generation, string parsing and scanning classes, base64 encoding and decoding, a bit array, and several miscellaneous utility classes.
javax.lang.model.util
Utilities to assist in the processing of program elements and types.
javax.script
The scripting API consists of interfaces and classes that define Java™ Scripting Engines and provides a framework for their use in Java applications.
javax.sql.rowset
Standard interfaces and base classes for JDBC RowSet implementations.
javax.sql.rowset.serial
Provides utility classes to allow serializable mappings between SQL types and data types in the Java programming language.
javax.sql.rowset.spi
The standard classes and interfaces that a third party vendor has to use in its implementation of a synchronization provider.
javax.swing.text
Provides classes and interfaces that deal with editable and noneditable text components.
javax.swing.text.html
Provides the class HTMLEditorKit and supporting classes for creating HTML text editors.
javax.swing.text.rtf
Provides a class (RTFEditorKit) for creating Rich-Text-Format text editors.
javax.tools
Provides interfaces for tools which can be invoked from a program, for example, compilers.
javax.xml.stream
Defines interfaces and classes for the Streaming API for XML (StAX).
javax.xml.stream.events
Defines event interfaces for the Streaming API for XML (StAX).
javax.xml.transform.stream
Provides stream and URI specific transformation classes.
org.w3c.dom.ls
Provides interfaces for DOM Level 3 Load and Save.