Java Reference
In-Depth Information
array, the
JSRsView.detectAPIs()
method tries to load a Java class
whose name is stored in the
ApiInfo.mainClass
member:
// The user view of the JSRs Detector MIDlet
public class JSRsView extends Form implements CommandListener
{
private Command exit = new Command("Exit", Command.EXIT, 0);
private Command detect = new Command("Detect", Command.OK, 0);
private JSRsDetectorMIDlet midlet;
// CommandListener implementation
public void commandAction(Command cmd, Displayable disp)
{
if (cmd == exit)
{
midlet.notifyDestroyed();
}
{
else if (cmd == detect)
detectAPIs();
}
}
// Detect supported APIs
private void detectAPIs()
{
resetUl();
ApiInfo[] detectedApis = midlet.getApiInfoArray();
for (int i = 0; i < detectedApis.length; i++)
{
try
{
Class.forName(detectedApis[i].mainClass);
// class loaded successfully - API is supported
append(detectedApis[i].name + ": Yes
\
n");
}
catch (ClassNotFoundException cnfe)
{
// class not loaded- API is NOT supported
append(detectedApis[i].name + ": No
\
n");
}
}
}
}
The default input to
JSRsDetectorMIDlet
can be read from the JAD
file by calling the MIDlet's
getAppProperty()
method sequentially
until
NULL
is returned. The following JAD properties are loaded and
parsed by the MIDlet to create the array of
ApiInfo
objects:
•
JSR1: JSR-139 CLDC 1.1,
java.lang.Float
•
JSR2: JSR-118MIDP 2.0,
javax.microedition.lcdui.Custom-
Item
•
JSR3: JSR-75 PIM,
javax.microedition.pim.PIM
•
JSR4: JSR-75 FileConnection,
javax.microedition.io.file.
FileConnection
•
JSR5: JSR-82 Bluetooth,
javax.bluetooth.LocalDevice
•
JSR6: JSR-135 MMAPI,
javax.microedition.media.Manager
•
JSR7: JSR-172 WS,
javax.xml.rpc.JAXRPCException
