Uses of Package
java.io

Packages that use java.io

java.applet	Provides the classes necessary to create an applet and the classes an applet uses to communicate with its applet context.
java.awt	Contains all of the classes for creating user interfaces and for painting graphics and images.
java.awt.color	Provides classes for color spaces.
java.awt.datatransfer	Provides interfaces and classes for transferring data between and within applications.
java.awt.event	Provides interfaces and classes for dealing with different types of events fired by AWT components.
java.awt.image	Provides classes for creating and modifying images.
java.beans	Contains classes for run-time Java Beans support.
java.io
java.lang
java.lang.reflect
java.math	Provides classes for performing arbitrary-precision integer arithmetic (BigInteger) and arbitrary-precision decimal arithmetic (BigDecimal).
java.net
java.rmi	Provides the RMI package.
java.security
java.security.acl
java.security.cert
java.security.interfaces
java.security.spec
java.text
java.util
java.util.jar
java.util.zip
javax.microedition.io	The classes for the generic connections.
javax.microedition.xlet	Provides interfaces used by applications and the application manager to communicate.
javax.microedition.xlet.ixc	Provides facilities for inter-Xlet communication (IXC).

Classes in java.io used by java.applet

Serializable
Serializability of a class is enabled by the class implementing the java.io.Serializable interface.

Classes in java.io used by java.awt

FilenameFilter
Instances of classes that implement this interface are used to filter filenames.

IOException
Signals that an I/O exception of some sort has occurred.

ObjectOutputStream
An ObjectOutputStream writes primitive data types and graphs of Java objects to an OutputStream.

PrintStream
A PrintStream adds functionality to another output stream, namely the ability to print representations of various data values conveniently.

PrintWriter
Print formatted representations of objects to a text-output stream.

Serializable
Serializability of a class is enabled by the class implementing the java.io.Serializable interface.

Classes in java.io used by java.awt.color

Serializable
Serializability of a class is enabled by the class implementing the java.io.Serializable interface.

Classes in java.io used by java.awt.datatransfer

Externalizable
Only the identity of the class of an Externalizable instance is written in the serialization stream and it is the responsibility of the class to save and restore the contents of its instances.

IOException
Signals that an I/O exception of some sort has occurred.

ObjectInput
ObjectInput extends the DataInput interface to include the reading of objects.

ObjectOutput
ObjectOutput extends the DataOutput interface to include writing of objects.

Serializable
Serializability of a class is enabled by the class implementing the java.io.Serializable interface.

Classes in java.io used by java.awt.event

Serializable
Serializability of a class is enabled by the class implementing the java.io.Serializable interface.

Classes in java.io used by java.awt.image

Serializable
Serializability of a class is enabled by the class implementing the java.io.Serializable interface.

Classes in java.io used by java.beans

IOException
Signals that an I/O exception of some sort has occurred.

Serializable
Serializability of a class is enabled by the class implementing the java.io.Serializable interface.

Classes in java.io used by java.io

BufferedReader
Read text from a character-input stream, buffering characters so as to provide for the efficient reading of characters, arrays, and lines.

DataInput
The DataInput interface provides for reading bytes from a binary stream and reconstructing from them data in any of the Java primitive types.

DataOutput
The DataOutput interface provides for converting data from any of the Java primitive types to a series of bytes and writing these bytes to a binary stream.

File
An abstract representation of file and directory pathnames.

FileDescriptor
Instances of the file descriptor class serve as an opaque handle to the underlying machine-specific structure representing an open file, an open socket, or another source or sink of bytes.

FileFilter
A filter for abstract pathnames.

FilenameFilter
Instances of classes that implement this interface are used to filter filenames.

FileNotFoundException
Signals that an attempt to open the file denoted by a specified pathname has failed.

FilterInputStream
A FilterInputStream contains some other input stream, which it uses as its basic source of data, possibly transforming the data along the way or providing additional functionality.

FilterOutputStream
This class is the superclass of all classes that filter output streams.

FilterReader
Abstract class for reading filtered character streams.

InputStream
This abstract class is the superclass of all classes representing an input stream of bytes.

InputStreamReader
An InputStreamReader is a bridge from byte streams to character streams: It reads bytes and translates them into characters according to a specified character encoding.

InvalidObjectException
Indicates that one or more deserialized objects failed validation tests.

IOException
Signals that an I/O exception of some sort has occurred.

NotActiveException
Thrown when serialization or deserialization is not active.

ObjectInput
ObjectInput extends the DataInput interface to include the reading of objects.

ObjectInputStream.GetField
Provide access to the persistent fields read from the input stream.

ObjectInputValidation
Callback interface to allow validation of objects within a graph.

ObjectOutput
ObjectOutput extends the DataOutput interface to include writing of objects.

ObjectOutputStream.PutField
Provide programatic access to the persistent fields to be written to ObjectOutput.

ObjectStreamClass
Serialization's descriptor for classes.

ObjectStreamConstants
Constants written into the Object Serialization Stream.

ObjectStreamException
Superclass of all exceptions specific to Object Stream classes.

ObjectStreamField
A description of a Serializable field from a Serializable class.

OptionalDataException
Unexpected data appeared in an ObjectInputStream trying to read an Object.

OutputStream
This abstract class is the superclass of all classes representing an output stream of bytes.

OutputStreamWriter
An OutputStreamWriter is a bridge from character streams to byte streams: Characters written to it are translated into bytes according to a specified character encoding.

PipedInputStream
A piped input stream should be connected to a piped output stream; the piped input stream then provides whatever data bytes are written to the piped output stream.

PipedOutputStream
A piped output stream can be connected to a piped input stream to create a communications pipe.

PipedReader
Piped character-input streams.

PipedWriter
Piped character-output streams.

Reader
Abstract class for reading character streams.

Serializable
Serializability of a class is enabled by the class implementing the java.io.Serializable interface.

SerializablePermission
This class is for Serializable permissions.

StreamCorruptedException
Thrown when control information that was read from an object stream violates internal consistency checks.

SyncFailedException
Signals that a sync operation has failed.

UnsupportedEncodingException
The Character Encoding is not supported.

Writer
Abstract class for writing to character streams.

Classes in java.io used by java.lang

File
An abstract representation of file and directory pathnames.

FileDescriptor
Instances of the file descriptor class serve as an opaque handle to the underlying machine-specific structure representing an open file, an open socket, or another source or sink of bytes.

InputStream
This abstract class is the superclass of all classes representing an input stream of bytes.

IOException
Signals that an I/O exception of some sort has occurred.

OutputStream
This abstract class is the superclass of all classes representing an output stream of bytes.

PrintStream
A PrintStream adds functionality to another output stream, namely the ability to print representations of various data values conveniently.

PrintWriter
Print formatted representations of objects to a text-output stream.

Serializable
Serializability of a class is enabled by the class implementing the java.io.Serializable interface.

UnsupportedEncodingException
The Character Encoding is not supported.

Classes in java.io used by java.lang.reflect

PrintStream
A PrintStream adds functionality to another output stream, namely the ability to print representations of various data values conveniently.

PrintWriter
Print formatted representations of objects to a text-output stream.

Serializable
Serializability of a class is enabled by the class implementing the java.io.Serializable interface.

Classes in java.io used by java.math

Serializable
Serializability of a class is enabled by the class implementing the java.io.Serializable interface.

Classes in java.io used by java.net

FileDescriptor
Instances of the file descriptor class serve as an opaque handle to the underlying machine-specific structure representing an open file, an open socket, or another source or sink of bytes.

InputStream
This abstract class is the superclass of all classes representing an input stream of bytes.

IOException
Signals that an I/O exception of some sort has occurred.

OutputStream
This abstract class is the superclass of all classes representing an output stream of bytes.

Serializable
Serializability of a class is enabled by the class implementing the java.io.Serializable interface.

Classes in java.io used by java.rmi

IOException
Signals that an I/O exception of some sort has occurred.

PrintStream
A PrintStream adds functionality to another output stream, namely the ability to print representations of various data values conveniently.

PrintWriter
Print formatted representations of objects to a text-output stream.

Serializable
Serializability of a class is enabled by the class implementing the java.io.Serializable interface.

Classes in java.io used by java.security

FilterInputStream
A FilterInputStream contains some other input stream, which it uses as its basic source of data, possibly transforming the data along the way or providing additional functionality.

FilterOutputStream
This class is the superclass of all classes that filter output streams.

InputStream
This abstract class is the superclass of all classes representing an input stream of bytes.

IOException
Signals that an I/O exception of some sort has occurred.

OutputStream
This abstract class is the superclass of all classes representing an output stream of bytes.

PrintStream
A PrintStream adds functionality to another output stream, namely the ability to print representations of various data values conveniently.

PrintWriter
Print formatted representations of objects to a text-output stream.

Serializable
Serializability of a class is enabled by the class implementing the java.io.Serializable interface.

Classes in java.io used by java.security.acl

Serializable
Serializability of a class is enabled by the class implementing the java.io.Serializable interface.

Classes in java.io used by java.security.cert

InputStream
This abstract class is the superclass of all classes representing an input stream of bytes.

ObjectStreamException
Superclass of all exceptions specific to Object Stream classes.

Serializable
Serializability of a class is enabled by the class implementing the java.io.Serializable interface.

Classes in java.io used by java.security.interfaces

Serializable
Serializability of a class is enabled by the class implementing the java.io.Serializable interface.

Classes in java.io used by java.security.spec

Serializable
Serializability of a class is enabled by the class implementing the java.io.Serializable interface.

Classes in java.io used by java.text

InvalidObjectException
Indicates that one or more deserialized objects failed validation tests.

Serializable
Serializability of a class is enabled by the class implementing the java.io.Serializable interface.

Classes in java.io used by java.util

InputStream
This abstract class is the superclass of all classes representing an input stream of bytes.

IOException
Signals that an I/O exception of some sort has occurred.

OutputStream
This abstract class is the superclass of all classes representing an output stream of bytes.

PrintStream
A PrintStream adds functionality to another output stream, namely the ability to print representations of various data values conveniently.

PrintWriter
Print formatted representations of objects to a text-output stream.

Serializable
Serializability of a class is enabled by the class implementing the java.io.Serializable interface.

Classes in java.io used by java.util.jar

File
An abstract representation of file and directory pathnames.

FilterInputStream
A FilterInputStream contains some other input stream, which it uses as its basic source of data, possibly transforming the data along the way or providing additional functionality.

FilterOutputStream
This class is the superclass of all classes that filter output streams.

InputStream
This abstract class is the superclass of all classes representing an input stream of bytes.

IOException
Signals that an I/O exception of some sort has occurred.

OutputStream
This abstract class is the superclass of all classes representing an output stream of bytes.

Serializable
Serializability of a class is enabled by the class implementing the java.io.Serializable interface.

Classes in java.io used by java.util.zip

File
An abstract representation of file and directory pathnames.

FilterInputStream
A FilterInputStream contains some other input stream, which it uses as its basic source of data, possibly transforming the data along the way or providing additional functionality.

FilterOutputStream
This class is the superclass of all classes that filter output streams.

InputStream
This abstract class is the superclass of all classes representing an input stream of bytes.

IOException
Signals that an I/O exception of some sort has occurred.

OutputStream
This abstract class is the superclass of all classes representing an output stream of bytes.

Serializable
Serializability of a class is enabled by the class implementing the java.io.Serializable interface.

Classes in java.io used by javax.microedition.io

DataInput
The DataInput interface provides for reading bytes from a binary stream and reconstructing from them data in any of the Java primitive types.

DataInputStream
A data input stream lets an application read primitive Java data types from an underlying input stream in a machine-independent way.

DataOutput
The DataOutput interface provides for converting data from any of the Java primitive types to a series of bytes and writing these bytes to a binary stream.

DataOutputStream
A data input stream lets an application write primitive Java data types to an output stream in a portable way.

InputStream
This abstract class is the superclass of all classes representing an input stream of bytes.

IOException
Signals that an I/O exception of some sort has occurred.

OutputStream
This abstract class is the superclass of all classes representing an output stream of bytes.

Serializable
Serializability of a class is enabled by the class implementing the java.io.Serializable interface.

Classes in java.io used by javax.microedition.xlet

Serializable
Serializability of a class is enabled by the class implementing the java.io.Serializable interface.

Classes in java.io used by javax.microedition.xlet.ixc

IOException
Signals that an I/O exception of some sort has occurred.

Serializable
Serializability of a class is enabled by the class implementing the java.io.Serializable interface.