Radios, Cell Phones, & Java

Offline Radio-Station Database

The same "radio-station roaming" idea applies in offline scenarios, too, although the storage mechanism for the radio-station data differs and is more varied. The four main approaches are:

• Autoscanning and arbitrary naming of radio stations (for example, preset number "1," FM frequency "91.1 MHz," radio-station name "Station 1"):

int RadioStationFrequency = 
   tunerControl.seek
      (prevFrequency, 
      TunerControl.
      MODULATION_FM, true);

• Static list of frequency and names hard-coded into the radio application:

tunerControl.setPresetName
   (1, "C-ROCK");
tunerControl.
   setFrequency(911000, 
   TunerControl.MODULATION_FM);
tunerControl.setStereoMode(
   TunerControl.AUTO);
tunerControl.setPreset(1);
callinNumber[1]="555-5555";

tunerControl.setPresetName
   (2, "Tennessee FM");
tunerControl.setFrequency
   (919000, TunerControl.
    MODULATION_FM);
tunerControl.setStereoMode
   (TunerControl.AUTO);
tunerControl.setPreset(2);
callinNumber[2]="555-5556";

tuner.setPresetName
   (3, "Easy Listening");
tuner.setFrequency(1046000, 
   TunerControl.MODULATION_FM);
tuner.setStereoMode
   (TunerControl.AUTO);
tuner.setPreset(3);
callinNumber[3]="555-5557";

• Radio-station data read from the radio application's JAD/Manifest file:

tunerControl.setPresetName
   (1, getAppProperty
      ("PresetName.1"));
MIDlet-1: AMMS Radio, 
   AMMSRadio.png, AMMSRadio
MIDlet-Jar-Size: 14851
MIDlet-Jar-URL: AMMSRadio.jar
MIDlet-Name: AMMSRadio
MIDlet-Vendor: Tea Vui Huang
MIDlet-Version: 1.0
Frequency.1: 911000
Frequency.2: 919000
Frequency.3: 940000
PresetName.1: All Day News
PresetName.2: Elvis Lives
PresetName.3: Sports Live
CallinNumber.1: 555-5555

CallinNumber.2: 555-5556
CallinNumber.3: 555-5557

• Radio-station data read from a file in the radio application's JAR file (FM frequency, preset number, radio-station name, call-in number; for instance: 911,000, 1, BBC1, 555-5555, respectively):

final InputStream is = 
   getClass().getResourceAsStream
      ("/presets.csv");