Developing Xlets using Java 1.5

Question

Hi Folks,
Does anybody knows that is it possible to develop Xlets using Java 1.5. I tried to write some using NetBeans 5.0, and jdk 1.4. ?
Cheers,

Answer 1

With the current download from reference implementation from
http://java.sun.com/products/javatv/
I found I had to make a few changes to get anything to work well. First, I found that there is some kind of XML parsing error (not due to a file being bad but something else):
java -cp samples\runxlet;javatv.jar RunXlet SvcDispXlet
and it brings up a window but nothing is rendered. The output I see is
Running Xlet named: SvcDispXlet
ServiceFile: com.sun.tv.receiver.ReceiverFile
JMFProperties: readProperties
Running Data from Class = com.sun.tv.receiver.ReceiverFile
Parsing failed: com.sun.org.apache.xerces.internal.impl.io.MalformedByteSequence
Exception: Invalid byte 1 of 1-byte UTF-8 sequence., file: lib\JavaTVSampleFile01.xml
XletContainer constructor
ROOTFRAME: OTHER 0:com.sun.tv.XletContainer[,0,0,0x0,invalid,hidden]
so I had to change
lib\JavaTV.properties
ServiceFileHandler=com.sun.tv.receiver.ReceiverFile
# ServiceFileHandler=SampleData_01
to
# ServiceFileHandler=com.sun.tv.receiver.ReceiverFile
ServiceFileHandler=SampleData_01
If you want a ServiceContext, try downloading the source and changing
share\javatv\classes\com\sun\tv\receiver\SIEmulator.java
private static ServiceContext svcctx = null;
putResidentXlet(...)
if(svcctx == null){
try { svcctx = new com.sun.tv.ServiceContextImpl(); }catch (Exception e){ e.printStackTrace(); }
AppSignalEvent ase = new AppSignalEvent(dispManager.getRootFrame(),
AppSignalEvent.AUTOSTART, null, xletPath, xletName, svcctx, args);^M
but this still will not give you events. Some Xlet's (like the BdjGunBunny Xlet) wait for suchs events before starting.
C:\Java_ME_platform_SDK_3.0_EA\apps\BdjGunBunny\src\com\hdcookbook\gunbunny\BaseXlet.java
See code in
void waitForPresenting()
* Get a system callback via ServiceContextListener
public void receiveServiceContextEvent(ServiceContextEvent e) {
if (e instanceof NormalContentEvent) {
synchronized(this) {
isPresenting = true;
this.notifyAll();
}