一个时间服务器简单实现 |
| 作者：j2medev 来源：j2medev 发布时间：2006-7-25 8:54:37 |
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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); } } } |
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