Object Serialization

The last several chapters have shown you how to read and write Java's fundamental data types (byte, int, String, etc.). However, there's been one glaring omission. Java is an object-oriented language, and yet aside from the special case of strings, you haven't seen any general-purpose methods for reading or writing objects.

Object serialization, first used in the context of Remote Method Invocation (RMI) and later for JavaBeans, addresses this need. The java.io.ObjectOutputStream class provides a writeObject( ) method you can use to write a Java object onto a stream. The java.io.ObjectInputStream class has a readObject( ) method that reads an object from a stream. ObjectInputStream and ObjectOutputStream implement the DataInput and DataOutput interfaces respectively so they can also write primitive data types such as ints, floats, and doubles, In this chapter you'll learn how to use these two classes to read and write objects as well as how to customize the format used for serialization.

Basic I/O

Introducing I/O

Output Streams

Input Streams

Data Sources

File Streams

Network Streams

Filter Streams

Filter Streams

Print Streams

Data Streams

Streams in Memory

Compressing Streams

JAR Archives

Cryptographic Streams

Object Serialization

New I/O



Nonblocking I/O

The File System

Working with Files

File Dialogs and Choosers


Character Sets and Unicode

Readers and Writers

Formatted I/O with java.text


The Java Communications API


The J2ME Generic Connection Framework


Character Sets

Java I/O
Java I/O
ISBN: 0596527500
EAN: 2147483647
Year: 2004
Pages: 244

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