Socket

ServerSocket is for servers. The Socket class is for clients.

Here are two constructors used to create client sockets:

Socket(String hostName, int port) throws UnknownHostException, IOException

Creates a socket connected to the named host and port.

Socket(InetAddress ipAddress, int port) throws IOException

Creates a socket using a preexisting InetAddress object and a port.

Methods from Socket

InetAddress getInetAddress( )

Returns the InetAddress associated with the Socket object. It returns null if the socket is not connected.

int getPort( )

Returns the remote port to which the invoking Socket object is connected. It returns 0 if the socket is not connected.

int getLocalPort( )

Returns the local port to which the invoking Socket object is bound. It returns -1 if the socket is not bound.

InputStream getInputStream( ) throws IOException

Returns the InputStream associated with the invoking socket.

OutputStream getOutputStream( ) throws IOException

Returns the OutputStream associated with the invoking socket.

connect( )

allows you to specify a new connection;

isConnected( )

returns true if the socket is connected to a server;

isBound( )

returns true if the socket is bound to an address;

isClosed( )

returns true if the socket is closed.

1. Socket
2. new Socket(InetAddress address, int port) throws IOException
3. Socket: connect(SocketAddress endpoint, int timeout) throws IOException
4. Socket: getInputStream() throws IOException
5. Socket: getLocalSocketAddress()
6. Socket: getOutputStream() throws IOException
7. Socket: getRemoteSocketAddress()
8. Socket: readUTF() and writeUTF(String str)