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Java Network Programming, 3rd Edition

Name: Java Network Programming, 3rd Edition
Author: Elliotte Rusty Harold
ISBN: 9780596007218

by Elliotte Rusty Harold

October 2004

Intermediate to advanced

760 pages

23h 18m

English

O'Reilly Media, Inc.

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A Note Regarding Supplemental Files
Preface
About the Third EditionOrganization of the BookWho You AreJava VersionsAbout the ExamplesConventions Used in This BookRequest for CommentsComments and QuestionsAcknowledgments
1. Why Networked Java?
1.1. What Can a Network Program Do?1.1.1. Retrieve Data1.1.2. Send Data1.1.2.1. File storage1.1.2.2. Massively parallel computing1.1.3. Peer-to-Peer Interaction1.1.3.1. Games1.1.3.2. Chat1.1.3.3. File sharing1.1.4. Servers1.1.5. Searching the Web1.1.6. Electronic Commerce1.1.7. Ubiquitous Computing1.1.8. Interactive Television1.2. Security1.3. But Wait! There’s More!
2. Basic Network Concepts
2.1. Networks2.2. The Layers of a Network2.2.1. The Host-to-Network Layer2.2.2. The Internet Layer2.2.3. The Transport Layer2.2.4. The Application Layer2.3. IP, TCP, and UDP2.3.1. IP Addresses and Domain Names2.3.2. Ports2.4. The Internet2.4.1. Internet Address Classes2.4.2. Network Address Translation2.4.3. Firewalls2.4.4. Proxy Servers2.5. The Client/Server Model2.6. Internet Standards2.6.1. IETF RFCs2.6.2. W3C Recommendations
3. Basic Web Concepts
3.1. URIs3.1.1. URNs3.1.2. URLs3.1.3. Relative URLs3.2. HTML, SGML, and XML3.3. HTTP3.4. MIME Media Types3.5. Server-Side Programs
4. Streams
4.1. Output Streams4.2. Input Streams4.2.1. Marking and Resetting4.3. Filter Streams4.3.1. Chaining Filters Together4.3.2. Buffered Streams4.3.3. PrintStream4.3.4. PushbackInputStream4.3.5. Data Streams4.3.6. Compressing Streams4.3.7. Digest Streams4.3.8. Encrypting Streams4.4. Readers and Writers4.4.1. Writers4.4.2. OutputStreamWriter4.4.3. Readers4.4.4. Filter Readers and Writers4.4.4.1. Buffered readers and writers4.4.4.2. LineNumberReader4.4.4.3. PushbackReader4.4.4.4. PrintWriter
5. Threads
5.1. Running Threads5.1.1. Subclassing Thread5.1.2. Implementing the Runnable Interface5.2. Returning Information from a Thread5.2.1. Race Conditions5.2.2. Polling5.2.3. Callbacks5.3. Synchronization5.3.1. Synchronized Blocks5.3.2. Synchronized Methods5.3.3. Alternatives to Synchronization5.4. Deadlock5.5. Thread Scheduling5.5.1. Priorities5.5.2. Preemption5.5.2.1. Blocking5.5.2.2. Yielding5.5.2.3. Sleeping5.5.2.4. Joining threads5.5.2.5. Waiting on an object5.5.2.6. Priority-based preemption5.5.2.7. Finish5.6. Thread Pools
6. Looking Up Internet Addresses
6.1. The InetAddress Class6.1.1. Creating New InetAddress Objects6.1.1.1. public static InetAddress getByName(String hostName) throws UnknownHostException6.1.1.2. public static InetAddress[ ] getAllByName(String hostName) throws UnknownHostException6.1.1.3. public static InetAddress getByAddress(byte[ ] address) throws UnknownHostException // Java 1.4public static InetAddress getByAddress(String hostName, byte[] address) throws UnknownHostException // Java 1.46.1.1.4. public static InetAddress getLocalHost( ) throws UnknownHostException6.1.2. Security Issues6.1.3. Getter Methods6.1.3.1. public String getHostName( )6.1.3.2. public String getHostAddress( )6.1.3.3. public byte[] getAddress( )6.1.4. Address Types6.1.4.1. public boolean isAnyLocalAddress( )6.1.4.2. public boolean isLoopbackAddress( )6.1.4.3. public boolean isLinkLocalAddress( )6.1.4.4. public boolean isSiteLocalAddress( )6.1.4.5. public boolean isMulticastAddress( )6.1.4.6. public boolean isMCGlobal( )6.1.4.7. public boolean isMCOrgLocal( )6.1.4.8. public boolean isMCSiteLocal( )6.1.4.9. public boolean isMCLinkLocal( )6.1.4.10. public boolean isMCNodeLocal( )6.1.5. Testing Reachability // Java 1.56.1.6. Object Methods6.1.6.1. public boolean equals(Object o)6.1.6.2. public int hashCode( )6.1.6.3. public String toString( )6.2. Inet4Address and Inet6Address6.3. The NetworkInterface Class6.3.1. Factory Methods6.3.1.1. public static NetworkInterface getByName(String name) throws SocketException6.3.1.2. public static NetworkInterface getByInetAddress(InetAddress address) throws SocketException6.3.1.3. public static Enumeration getNetworkInterfaces( ) throws SocketException6.3.2. Getter Methods6.3.2.1. public Enumeration getInetAddresses( )6.3.2.2. public String getName( )6.3.2.3. public String getDisplayName( )6.3.3. Object Methods6.4. Some Useful Programs6.4.1. HostLookup6.4.2. Processing Web Server Log Files
7. URLs and URIs
7.1. The URL Class7.1.1. Creating New URLs7.1.1.1. Constructing a URL from a string7.1.1.2. Constructing a URL from its component parts7.1.1.3. Constructing relative URLs7.1.1.4. Specifying a URLStreamHandler // Java 1.27.1.1.5. Other sources of URL objects7.1.2. Splitting a URL into Pieces7.1.2.1. public String getProtocol( )7.1.2.2. public String getHost( )7.1.2.3. public int getPort( )7.1.2.4. public int getDefaultPort( )7.1.2.5. public String getFile( )7.1.2.6. public String getPath( ) // Java 1.37.1.2.7. public String getRef( )7.1.2.8. public String getQuery( ) // Java 1.37.1.2.9. public String getUserInfo( ) // Java 1.37.1.2.10. public String getAuthority( ) // Java 1.37.1.3. Retrieving Data from a URL7.1.3.1. public final InputStream openStream( ) throws IOException7.1.3.2. public URLConnection openConnection( ) throws IOException7.1.3.3. public final Object getContent( ) throws IOException7.1.3.4. public final Object getContent(Class[] classes) throws IOException // Java 1.37.1.4. Utility Methods7.1.4.1. public boolean sameFile(URL other)7.1.4.2. public String toExternalForm( )7.1.4.3. public URI toURI( ) throws URISyntaxException // Java 1.57.1.5. The Object Methods7.1.5.1. public String toString( )7.1.5.2. public boolean equals(Object o)7.1.5.3. public int hashCode( )7.1.6. Methods for Protocol Handlers7.1.6.1. public static synchronized void setURLStreamHandlerFactory(URLStreamHandlerFactory factory)7.2. The URLEncoder and URLDecoder Classes7.2.1. URLEncoder7.2.2. URLDecoder7.3. The URI Class7.3.1. Constructing a URI7.3.1.1. public URI(String uri) throws URISyntaxException7.3.1.2. public URI(String scheme, String schemeSpecificPart, String fragment) throws URISyntaxException7.3.1.3. public URI(String scheme, String host, String path, String fragment) throws URISyntaxException7.3.1.4. public URI(String scheme, String authority, String path, String query, String fragment) throws URISyntaxException7.3.1.5. public URI(String scheme, String userInfo, String host, int port, String path, String query, String fragment) throws URISyntaxException7.3.1.6. public static URI create(String uri)7.3.2. The Parts of the URI7.3.3. Resolving Relative URIs7.3.3.1. public URI resolve(URI uri)7.3.3.2. public URI resolve(String uri)7.3.3.3. public URI relativize(URI uri)7.3.4. Utility Methods7.3.4.1. public boolean equals(Object o)7.3.4.2. public int hashCode( )7.3.4.3. public int compareTo(Object o)7.3.4.4. public String toString( )7.3.4.5. public String toASCIIString( )7.4. Proxies7.4.1. System Properties7.4.2. The Proxy Class7.4.3. The ProxySelector Class7.5. Communicating with Server-Side Programs Through GET7.6. Accessing Password-Protected Sites7.6.1. The Authenticator Class7.6.2. The PasswordAuthentication Class7.6.3. The JPasswordField Class
8. HTML in Swing
8.1. HTML on Components8.2. JEditorPane8.2.1. Constructing HTML User Interfaces on the Fly8.2.2. Handling Hyperlinks8.2.3. Reading HTML Directly8.3. Parsing HTML8.3.1. HTMLEditorKit.Parser8.3.2. HTMLEditorKit.ParserCallback8.3.3. HTML.Tag8.3.4. Attributes8.4. Cookies

9. Sockets for Clients
9.1. Socket Basics9.2. Investigating Protocols with Telnet9.3. The Socket Class9.3.1. The Constructors9.3.1.1. public Socket(String host, int port) throws UnknownHostException, IOException9.3.1.2. public Socket(InetAddress host, int port) throws IOException9.3.1.3. public Socket(String host, int port, InetAddress interface, int localPort) throws IOException, UnknownHostException9.3.1.4. public Socket(InetAddress host, int port, InetAddress interface, int localPort) throws IOException9.3.1.5. protected Socket( )9.3.1.6. protected Socket(SocketImpl impl)9.3.1.7. public Socket(Proxy proxy) // Java 1.59.3.2. Getting Information About a Socket9.3.2.1. public InetAddress getInetAddress( )9.3.2.2. public int getPort( )9.3.2.3. public int getLocalPort( )9.3.2.4. public InetAddress getLocalAddress( )9.3.2.5. public InputStream getInputStream( ) throws IOException9.3.2.6. public OutputStream getOutputStream( ) throws IOException9.3.3. Closing the Socket9.3.3.1. public void close( ) throws IOException9.3.3.2. Half-closed sockets // Java 1.39.3.4. Setting Socket Options9.3.4.1. TCP_NODELAY9.3.4.2. SO_LINGER9.3.4.3. SO_TIMEOUT9.3.4.4. SO_RCVBUF9.3.4.5. SO_SNDBUF9.3.4.6. SO_KEEPALIVE9.3.4.7. OOBINLINE // Java 1.49.3.4.8. SO_REUSEADDR // Java 1.49.3.5. Class of Service9.3.6. The Object Methods9.3.6.1. public String toString( )9.4. Socket Exceptions9.5. Socket Addresses9.6. Examples9.6.1. Finger9.6.2. Whois
10. Sockets for Servers
10.1. The ServerSocket Class10.1.1. The Constructors10.1.1.1. public ServerSocket(int port) throws BindException, IOException10.1.1.2. public ServerSocket(int port, int queueLength) throws IOException, BindException10.1.1.3. public ServerSocket(int port, int queueLength, InetAddress bindAddress) throws BindException, IOException10.1.1.4. public ServerSocket( ) throws IOException // Java 1.410.1.2. Accepting and Closing Connections10.1.2.1. public Socket accept( ) throws IOException10.1.2.2. public void close( ) throws IOException10.1.3. The get Methods10.1.3.1. public InetAddress getInetAddress( )10.1.3.2. public int getLocalPort( )10.1.4. Socket Options10.1.4.1. SO_TIMEOUT10.1.4.2. SO_REUSEADDR // Java 1.410.1.4.3. SO_RCVBUF // Java 1.410.1.4.4. public void setPerformancePreferences(int connectionTime, int latency, int bandwidth) // Java 1.510.1.5. The Object Methods10.1.5.1. public String toString( )10.1.6. Implementation10.1.6.1. public static void setSocketFactory(SocketImplFactory factory) throws IOException10.1.6.2. protected final void implAccept(Socket s) throws IOException10.2. Some Useful Servers10.2.1. Client Tester10.2.2. HTTP Servers10.2.2.1. A single-file server10.2.2.2. A redirector10.2.2.3. A full-fledged HTTP server
11. Secure Sockets
11.1. Secure Communications11.2. Creating Secure Client Sockets11.3. Methods of the SSLSocket Class11.3.1. Choosing the Cipher Suites11.3.2. Event Handlers11.3.3. Session Management11.3.4. Client Mode11.4. Creating Secure Server Sockets11.5. Methods of the SSLServerSocket Class11.5.1. Choosing the Cipher Suites11.5.2. Session Management11.5.3. Client Mode
12. Non-Blocking I/O
12.1. An Example Client12.2. An Example Server12.3. Buffers12.3.1. Creating Buffers12.3.1.1. Allocation12.3.1.2. Direct allocation12.3.1.3. Wrapping12.3.2. Filling and Draining12.3.3. Bulk Methods12.3.4. Data Conversion12.3.5. View Buffers12.3.6. Compacting Buffers12.3.7. Duplicating Buffers12.3.8. Slicing Buffers12.3.9. Marking and Resetting12.3.10. Object Methods12.4. Channels12.4.1. SocketChannel12.4.1.1. Connecting12.4.1.2. Reading12.4.1.3. Writing12.4.1.4. Closing12.4.2. ServerSocketChannel12.4.2.1. Creating server socket channels12.4.2.2. Accepting connections12.4.3. The Channels Class12.5. Readiness Selection12.5.1. The Selector Class12.5.2. The SelectionKey Class
13. UDP Datagrams and Sockets
13.1. The UDP Protocol13.2. The DatagramPacket Class13.2.1. The Constructors13.2.1.1. Constructors for receiving datagrams13.2.1.2. Constructors for sending datagrams13.2.2. The get Methods13.2.2.1. public InetAddress getAddress( )13.2.2.2. public int getPort( )13.2.2.3. public SocketAddress getSocketAddress( ) // Java 1.413.2.2.4. public byte[] getData( )13.2.2.5. public int getLength( )13.2.2.6. public int getOffset( ) // Java 1.213.2.3. The set Methods13.2.3.1. public void setData(byte[] data)13.2.3.2. public void setData(byte[] data, int offset, int length) // Java 1.213.2.3.3. public void setAddress(InetAddress remote)13.2.3.4. public void setPort(int port)13.2.3.5. public void setAddress(SocketAddress remote) // Java 1.413.2.3.6. public void setLength(int length)13.3. The DatagramSocket Class13.3.1. The Constructors13.3.1.1. public DatagramSocket( ) throws SocketException13.3.1.2. public DatagramSocket(int port) throws SocketException13.3.1.3. public DatagramSocket(int port, InetAddress interface) throws SocketException13.3.1.4. public DatagramSocket(SocketAddress interface) throws SocketException // Java 1.413.3.1.5. protected DatagramSocket(DatagramSocketImpl impl) throws SocketException // Java 1.413.3.2. Sending and Receiving Datagrams13.3.2.1. public void send(DatagramPacket dp) throws IOException13.3.2.2. public void receive(DatagramPacket dp) throws IOException13.3.2.3. public void close( )13.3.2.4. public int getLocalPort( )13.3.2.5. public InetAddress getLocalAddress( )13.3.2.6. public SocketAddress getLocalSocketAddress( ) // Java 1.413.3.3. Managing Connections13.3.3.1. public void connect(InetAddress host, int port) // Java 1.213.3.3.2. public void disconnect( ) // Java 1.213.3.3.3. public int getPort( ) // Java 1.213.3.3.4. public InetAddress getInetAddress( ) // Java 1.213.3.3.5. public InetAddress getRemoteSocketAddress( ) // Java 1.413.3.4. Socket Options13.3.4.1. SO_TIMEOUT13.3.4.2. SO_RCVBUF13.3.4.3. SO_SNDBUF13.3.4.4. SO_REUSEADDR13.3.4.5. SO_BROADCAST13.3.4.6. Traffic class13.4. Some Useful Applications13.4.1. Simple UDP Clients13.4.2. UDPServer13.4.3. A UDP Echo Client13.5. DatagramChannel13.5.1. Using DatagramChannel13.5.1.1. Opening a socket13.5.1.2. Connecting13.5.1.3. Receiving13.5.1.4. Sending13.5.1.5. Reading13.5.1.6. Writing13.5.1.7. Closing
14. Multicast Sockets
14.1. What Is a Multicast Socket?14.1.1. Multicast Addresses and Groups14.1.2. Clients and Servers14.1.3. Routers and Routing14.2. Working with Multicast Sockets14.2.1. The Constructors14.2.1.1. public MulticastSocket( ) throws SocketException14.2.1.2. public MulticastSocket(int port) throws SocketException14.2.1.3. public MulticastSocket(SocketAddress bindAddress) throws IOException // Java 1.414.2.2. Communicating with a Multicast Group14.2.2.1. public void joinGroup(InetAddress address) throws IOException14.2.2.2. public void joinGroup(SocketAddress address, NetworkInterface interface) throws IOException // Java 1.414.2.2.3. public void leaveGroup(InetAddress address) throws IOException14.2.2.4. public void leaveGroup(SocketAddress multicastAddress, NetworkInterface interface) throws IOException // Java 1.414.2.2.5. public void send(DatagramPacket packet, byte ttl) throws IOException14.2.2.6. public void setInterface(InetAddress address) throws SocketException14.2.2.7. public InetAddress getInterface( ) throws SocketException14.2.2.8. public void setNetworkInterface(NetworkInterface interface) throws SocketException // Java 1.414.2.2.9. public NetworkInterface getNetworkInterface( ) throws SocketException // Java 1.414.2.2.10. public void setTimeToLive(int ttl) throws IOException // Java 1.214.2.2.11. public int getTimeToLive( ) throws IOException // Java 1.214.2.2.12. public void setLoopbackMode(boolean disable) throws SocketException // Java 1.414.2.2.13. public boolean getLoopbackMode( ) throws SocketException // Java 1.414.3. Two Simple Examples
15. URLConnections
15.1. Opening URLConnections15.2. Reading Data from a Server15.3. Reading the Header15.3.1. Retrieving Specific Header Fields15.3.1.1. public String getContentType( )15.3.1.2. public int getContentLength( )15.3.1.3. public String getContentEncoding( )15.3.1.4. public long getDate( )15.3.1.5. public long getExpiration( )15.3.1.6. public long getLastModified( )15.3.2. Retrieving Arbitrary Header Fields15.3.2.1. public String getHeaderField(String name)15.3.2.2. public String getHeaderFieldKey(int n)15.3.2.3. public String getHeaderField(int n)15.3.2.4. public long getHeaderFieldDate(String name, long default)15.3.2.5. public int getHeaderFieldInt(String name, int default)15.4. Configuring the Connection15.4.1. protected URL url15.4.2. protected boolean connected15.4.3. protected boolean allowUserInteraction15.4.4. protected boolean doInput15.4.5. protected boolean doOutput15.4.6. protected boolean ifModifiedSince15.4.7. protected boolean useCaches15.4.8. Timeouts15.5. Configuring the Client Request HTTP Header15.6. Writing Data to a Server15.7. Content Handlers15.7.1. Getting Content15.7.1.1. public Object getContent( ) throws IOException15.7.1.2. public Object getContent(Class[] classes) throws IOException // Java 1.315.7.2. ContentHandlerFactory15.8. The Object Methods15.9. Security Considerations for URLConnections15.10. Guessing MIME Content Types15.11. HttpURLConnection15.11.1. The Request Method15.11.1.1. HEAD15.11.1.2. OPTIONS15.11.1.3. DELETE15.11.1.4. PUT15.11.1.5. TRACE15.11.2. Disconnecting from the Server15.11.3. Handling Server Responses15.11.3.1. Error conditions15.11.3.2. Redirects15.11.4. Proxies15.11.5. Streaming Mode15.12. Caches15.13. JarURLConnection
16. Protocol Handlers
16.1. What Is a Protocol Handler?16.2. The URLStreamHandler Class16.2.1. The Constructor16.2.2. Methods for Parsing URLs16.2.2.1. protected void parseURL(URL u, String spec, int start, int limit)16.2.2.2. protected String toExternalForm(URL u)16.2.2.3. protected void setURL(URL u, String protocol, String host, int port, String authority, String userInfo, String path, String query, String fragmentID) // Java 1.316.2.2.4. protected int getDefaultPort( ) // Java 1.316.2.2.5. protected InetAddress getHostAddress(URL u) // Java 1.316.2.2.6. protected boolean hostsEqual(URL u1, URL u2) // Java 1.316.2.2.7. protected boolean sameFile(URL u1, URL u2) // Java 1.316.2.2.8. protected boolean equals(URL u1, URL u2) // Java 1.316.2.2.9. protected int hashCode(URL u) // Java 1.316.2.3. A Method for Connecting16.2.3.1. protected abstract URLConnection openConnection(URL u) throws IOException16.2.3.2. protected URLConnection openConnection(URL u, Proxy p) throws IOException // Java 1.516.3. Writing a Protocol Handler16.4. More Protocol Handler Examples and Techniques16.4.1. A daytime Protocol Handler16.4.2. A chargen Protocol Handler16.5. The URLStreamHandlerFactory Interface
17. Content Handlers
17.1. What Is a Content Handler?17.2. The ContentHandler Class17.2.1. A Content Handler for Tab-Separated Values17.2.2. Using Content Handlers17.2.3. Choosing Return Types17.3. The ContentHandlerFactory Interface17.3.1. The createContentHandler( ) Method17.3.2. Installing Content Handler Factories17.4. A Content Handler for the FITS Image Format
18. Remote Method Invocation
18.1. What Is Remote Method Invocation?18.1.1. Object Serialization18.1.2. Under the Hood18.2. Implementation18.2.1. The Server Side18.2.2. Compiling the Stubs18.2.3. Starting the Server18.2.4. The Client Side18.2.5. Running the Client18.3. Loading Classes at Runtime18.4. The java.rmi Package18.4.1. The Remote Interface18.4.2. The Naming Class18.4.2.1. public static String[] list(String url) throws RemoteException, MalformedURLException18.4.2.2. public static Remote lookup(String url) throws RemoteException, NotBoundException, AccessException, MalformedURLException18.4.2.3. public static void bind(String url, Remote object) throws RemoteException, AlreadyBoundException, MalformedURLException, AccessException18.4.2.4. public static void unbind(String url) throws RemoteException, NotBoundException, AlreadyBoundException, MalformedURLException, AccessException // Java 1.218.4.2.5. public static void rebind(String url, Remote object) throws RemoteException, AccessException, MalformedURLException18.4.3. The RMISecurityManager Class18.4.4. Remote Exceptions18.5. The java.rmi.registry Package18.5.1. The Registry Interface18.5.2. The LocateRegistry Class18.6. The java.rmi.server Package18.6.1. The RemoteObject Class18.6.2. The RemoteServer Class18.6.2.1. Constructors18.6.2.2. Getting information about the client18.6.2.3. Logging18.6.3. The UnicastRemoteObject Class18.6.4. Exceptions
19. The JavaMail API
19.1. What Is the JavaMail API?19.2. Sending Email19.2.1. Sending Email from an Application19.2.2. Sending Email from an Applet19.3. Receiving Mail19.4. Password Authentication19.5. Addresses19.5.1. The Address Class19.5.2. The InternetAddress Class19.5.3. The NewsAddress Class19.6. The URLName Class19.6.1. The Constructors19.6.2. Parsing Methods19.7. The Message Class19.7.1. Creating Messages19.7.1.1. Replying to messages19.7.1.2. Getting messages from folders19.7.2. Basic Header Info19.7.2.1. The From address19.7.2.2. The Reply-to address19.7.2.3. The recipient addresses19.7.2.4. The subject of the message19.7.2.5. The date of the message19.7.2.6. Saving changes19.7.3. Flags19.7.4. Folders19.7.5. Searching19.8. The Part Interface19.8.1. Attributes19.8.2. Headers19.8.3. Content19.8.3.1. Reading the contents of the part19.8.3.2. Writing the contents of the part19.9. Multipart Messages and File Attachments19.10. MIME Messages19.11. Folders19.11.1. Opening Folders19.11.2. Basic Folder Info19.11.3. Managing Folders19.11.4. Managing Messages in Folders19.11.5. Subscriptions19.11.6. Listing the Contents of a Folder19.11.7. Checking for Mail19.11.8. Getting Messages from Folders19.11.9. Searching Folders19.11.10. Flags19.11.11. Event Handling19.11.12. Utility Methods
Index
About the Author
Colophon
Copyright

Overview

The new third edition of this highly regarded introduction to Java networking programming has been thoroughly revised to cover all of the 100+ significant updates to Java Developers Kit (JDK) 1.5. It is a clear, complete introduction to developing network programs (both applets and applications) using Java, covering everything from networking fundamentals to remote method invocation (RMI).Java Network Programming, 3rd Edition includes chapters on TCP and UDP sockets, multicasting protocol and content handlers, servlets, multithreaded network programming, I/O, HTML parsing and display, the Java Mail API, and the Java Secure Sockets Extension. There's also significant information on the New I/O API that was developed in large part because of the needs of network programmers.This invaluable book is a complete, single source guide to writing sophisticated network applications. Packed with useful examples, it is the essential resource for any serious Java developer.

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