Send and receive UDP data package based on siemens TC65 module

Question

Everyone:
I am newer for J2ME. I have a TC65 module, I want to get a sending and receiving UDP data package exeample codes running on TC65. who can help me? thanks!

Answer 1

Hi deepspace,
I programmed a demo codes and run it on TC65T, debug trace like :
at^sjra=a:/NetDemo.jar
OK
NetDemo: Constructor
NetDemo: startApp
NetDemo: Profile could not be activated
NetDemo: destroyApp(true)
// below is demo codes, can you help me where error is?
package example.netdemo;
import javax.microedition.midlet.*;
import java.io.*;
import javax.microedition.io.*;
import javax.microedition.io.Datagram;
import javax.microedition.io.DatagramConnection;
public class NetDemo extends MIDlet {
public NetDemo()
System.out.println("NetDemo: Constructor");
public void startApp() throws MIDletStateChangeException
System.out.println("NetDemo: startApp");
try
DatagramConnection conn = (DatagramConnection) Connector.open("datagram://58.185.157.91:12003");
byte[] buffer = new byte[32];
Datagram dgram = conn.newDatagram(buffer, buffer.length);
for (int i = 0; i < 30; i++) {
buffer[i] = (byte)('0' + (i % 10));
conn.send(dgram);
catch (Exception e)
System.out.println("NetDemo: " + e.getMessage());
destroyApp(true);
public void pauseApp() {
System.out.println("NetDemo: pauseApp()");
public void destroyApp(boolean cond) {
System.out.println("NetDemo: destroyApp(" + cond + ")");
notifyDestroyed();
}