Java implements Simple Chat Room instances based on socket

Java implements Simple Chat Room instances based on socket

This example describes how to implement a simple chat room in Java based on socket. Share it with you for your reference. The specific implementation method is as follows:

Chatroomdemo. java

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Package com. socket. demo; Import java. io. IOException; Import java.net. DatagramSocket; Public class ChatRoomDemo { /** * @ Param args * @ Throws IOException */ Public static void main (String [] args) throws IOException { System. out. println ("---- entering the chat room ----"); DatagramSocket send = new DatagramSocket (); DatagramSocket rece = new DatagramSocket (10001 ); New Thread (new SendDemo (send). start (); // start the sending Thread New Thread (new ReceiveDemo (rece). start (); // start the receiving end Thread } }

SendDemo. java

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Package com. socket. demo; Import java. io. BufferedReader; Import java. io. InputStreamReader; Import java.net. DatagramPacket; Import java.net. DatagramSocket; Import java.net. InetAddress; Public class SendDemo implements Runnable { Private DatagramSocket ds; // Parameter Constructor Public SendDemo (DatagramSocket ds ){ This. ds = ds; } @ Override Public void run (){ Try { BufferedReader bufr = new BufferedReader (new InputStreamReader ( System. in )); String line = null; While (line = bufr. readLine ())! = Null ){ Byte [] buf = line. getBytes (); /* * // 192.168.1.255 is the ip address segment broadcast address. The information sent to this IP address is as follows, * All ip addresses in the 192.168.1.1-192.168.1.255 ip segment can receive messages. */ Required rampacket dp = new DatagramPacket (buf, buf. length, InetAddress. getByName ("192.168.1.255"), 10001 ); Ds. send (dp ); If ("886". equals (line )) Break; } Ds. close (); } Catch (Exception e ){ } } }

ReceiveDemo. java

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Package com. socket. demo; Import java.net. DatagramPacket; Import java.net. DatagramSocket; Public class ReceiveDemo implements Runnable { Private DatagramSocket ds; Public ReceiveDemo (DatagramSocket ds ){ This. ds = ds; } @ Override Public void run (){ Try { While (true ){ // 2. Create a data packet. Byte [] buf = new byte [1, 1024]; DatagramPacket dp = new DatagramPacket (buf, buf. length ); // 3. Use the Receiving Method to store data in the data packet. Ds. receive (dp); // blocked. // 4. parse the data in the data packet object, such as the address, port, and data content. String ip = dp. getAddress (). getHostAddress (); Int port = dp. getPort (); System. out. println ("---- port -----" + port ); String text = new String (dp. getData (), 0, dp. getLength ()); System. out. println (ip + ":" + text ); If (text. equals ("886 ")){ System. out. println (ip + "... quit chatting room "); } } } Catch (Exception e ){ } } }

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I hope this article will help you with java programming.