www.pudn.com > 20051122095286.zip > TimeServer.java

package ora.ch6; 
 
import java.io.IOException; 
import java.util.Calendar; 
import java.util.Date; 
import javax.microedition.io.Connector; 
import javax.microedition.io.Datagram; 
import javax.microedition.io.DatagramConnection; 
 
public class TimeServer { 
    public static void main(String[] args) { 
                 
        try { 
            Calendar cal = Calendar.getInstance(); 
            DatagramConnection receiver =  
                    (DatagramConnection)Connector.open("datagram://:13"); 
            byte[] buffer = new byte[256]; 
            Datagram dgram = receiver.newDatagram(buffer, buffer.length); 
            for (;;) { 
                dgram.setLength(buffer.length); 
                 
                // Wait for somebody to call... 
                receiver.receive(dgram); 
                 
                // Get the time and store it in the buffer 
                cal.setTime(new Date()); 
                String time = cal.toString(); 
                byte[] dataBytes = time.getBytes(); 
                System.arraycopy(dataBytes, 0, buffer, 0, dataBytes.length); 
                 
                // Send back the reply 
                dgram.setLength(dataBytes.length); 
                receiver.send(dgram); 
            } 
        } catch (IOException ex) { 
            System.out.println("IOException: " + ex); 
        } 
    } 
}