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import javax.microedition.midlet.*;

    

    

    public class MyMIDlet extends MIDlet {

    

    

    private String suiteName;

    

    private String which_locale;

    

    

    public MyMIDlet(){

    

    suiteName = getAppProperty(   "MIDlet-Name"   );

    

    which_locale = getAppProperty("Which-Locale");

    

    }

    

    //這里省略了其他代碼

    

    }

屬性值對大小寫是敏感的，如果屬性值在底層系統(tǒng)、JAD文件和Manifest文件中都沒有定義的話，那么將返回Null。

#p#

簡單的Demo

下面是簡單的測試環(huán)境的代碼，有經(jīng)驗(yàn)的朋友可以很容易就就跑起來。

代碼片段

/**

* getSysInfo

*/

private void getSysInfo() {

addInfo( "Microedition Configuration: ",

getInfo(System.getProperty( "microedition.configuration")));

addInfo( "Microedition Profiles: ",

getInfo(System.getProperty( "microedition.profiles")));

addInfo( "microedition.jtwi.version:",

getInfo(System.getProperty( "microedition.jtwi.version")));

addInfo( "microedition.platform:",

getInfo(System.getProperty( "microedition.platform")));

addInfo( "microedition.locale:",

getInfo(System.getProperty( "microedition.locale")));

addInfo( "default encoding:",

getInfo(System.getProperty( "microedition.encoding")));

addInfo( "microedition.commports",

getInfo(System.getProperty( "microedition.commports")));

addInfo( "microedition.hostname",

getInfo(System.getProperty( "microedition.hostname")));

//  microedition.smartcardslots

addInfo( " microedition.smartcardslots",

getInfo(System.getProperty( " microedition.smartcardslots")));

addInfo( "com.nokia.network.access",

getInfo(System.getProperty( "com.nokia.network.access")));

addInfo( "com.nokia.mid.dateformat",

getInfo(System.getProperty( "com.nokia.mid.dateformat")));

addInfo( "com.nokia.mid.timeformat",

getInfo(System.getProperty( "com.nokia.mid.timeformat")));

addInfo( "com.nokia.memoryramfree",

getInfo(System.getProperty( "com.nokia.memoryramfree")));

addInfo( "com.nokia.mid.batterylevel",

getInfo(System.getProperty( "com.nokia.mid.batterylevel")));

addInfo( "com.nokia.mid.countrycode",

getInfo(System.getProperty( "com.nokia.mid.countrycode")));

addInfo( "com.nokia.mid.networkstatus",

getInfo(System.getProperty( "com.nokia.mid.networkstatus")));

addInfo( "com.nokia.mid.networksignal",

getInfo(System.getProperty( "com.nokia.mid.networksignal")));

addInfo( "com.nokia.mid.networkid",

getInfo(System.getProperty( "com.nokia.mid.networkid")));

addInfo( "com.nokia.mid.networkavailability",

getInfo(System.getProperty( "com.nokia.mid.networkavailability")));

addInfo( "com.nokia.mid.cellid",

getInfo(System.getProperty( "com.nokia.mid.cellid")));

addInfo( "com.nokia.mid.imei",

getInfo(System.getProperty( "com.nokia.mid.imei")));

addInfo( "com.nokia.mid.imsi",

getInfo(System.getProperty( "com.nokia.mid.imsi")));

String[] timeZoneIDs = java.util.TimeZone.getAvailableIDs();

StringBuffer timeZonesBuffer = new StringBuffer();

for (int i = 0; i < timeZoneIDs.length; i++) {

timeZonesBuffer.append(timeZoneIDs[i]).append('\n');

}

addInfo( "Total memory:",

Long.toString(Runtime.getRuntime().totalMemory()) + " bytes");

addInfo( "Free memory:",

Long.toString(Runtime.getRuntime().freeMemory()) + " bytes");

addInfo( "Available TimeZones:", timeZonesBuffer.toString());

addInfo( "Default TimeZone:", java.util.TimeZone.getDefault().getID());

addInfo( "com.siemens.mp.lcdui.Image", hasClassExit("com.siemens.mp.lcdui.Image") + "");

addInfo( "com.motorola.phonebook.PhoneBookRecord",        hasClassExit("com.motorola.phonebook.PhoneBookRecord") + "");

addInfo( "com.motorola.Dialer", hasClassExit("com.motorola.Dialer") + "");

addInfo( "com.jblend.util.Case", hasClassExit("com.jblend.util.Case") + "");

addInfo( "com.samsung.util.AudioClip", hasClassExit("com.samsung.util.AudioClip") + "");

addInfo( "com.mot.iden.multimedia.Lighting",     hasClassExit("com.mot.iden.multimedia.Lighting") + "");

}

private boolean hasClassExit(String aClassName) {

try {

Class.forName(aClassName);

return true;

} catch (Exception e) {

return false;

}

}

public String getInfo(String info) {

if (info == null) {

return "";

} else {

return info;

}

}

public void addInfo(String name, String value) {

iForm.append(new StringItem(name, value));

}

代碼片段2

public void collectInfos(TestClient midlet, Display display) {

try {

Class.forName( "javax.microedition.media.control.VideoControl");

addInfo( "MMAPI: ", "yes" );

addInfo( "MMAPI-Version: ",  getInfo(System.getProperty("microedition.media.version")) );

} catch (ClassNotFoundException e) {

addInfo( "MMAPI: ", "no" );

}

try {

Class.forName( "javax.wireless.messaging.Message");

addInfo( "WMAPI 1.1: ", "yes" );

try {

Class.forName( "javax.wireless.messaging.MultipartMessage");

addInfo( "WMAPI 2.0: ", "yes" );

} catch (ClassNotFoundException e) {

addInfo( "WMAPI 2.0: ", "no" );

}

} catch (ClassNotFoundException e) {

addInfo( "WMAPI 1.1: ", "no" );

}

try {

Class.forName( "javax.bluetooth.DiscoveryAgent");

addInfo( "Bluetooth-API: ", "yes" );

try {

Class.forName( "javax.obex.ClientSession");

addInfo( "Bluetooth-Obex-API: ", "yes" );

} catch (ClassNotFoundException e) {

addInfo( "Bluetooth-Obex-API: ", "no" );

}

} catch (ClassNotFoundException e) {

addInfo( "Bluetooth-API: ", "no" );

}

try {

Class.forName( "javax.microedition.m3g.Graphics3D");

addInfo( "M3G-API: ", "yes" );

} catch (ClassNotFoundException e) {

addInfo( "M3G-API: ", "no" );

}

try {

Class.forName( "javax.microedition.pim.PIM");

addInfo( "PIM-API: ", "yes" );

} catch (ClassNotFoundException e) {

addInfo( "PIM-API: ", "no" );

}

try {

Class.forName( "javax.microedition.io.file.FileSystemRegistry");

addInfo( "FileConnection-API: ", "yes" );

} catch (ClassNotFoundException e) {

addInfo( "FileConnection-API: ", "no" );

}

try {

Class.forName( "javax.microedition.location.Location");

addInfo( "Location-API: ", "yes" );

} catch (java.lang.Throwable e) {

addInfo( "Location-API: ", "no" );

}

try {

Class.forName( "javax.microedition.xml.rpc.Operation");

addInfo( "WebServices-API: ", "yes" );

} catch (ClassNotFoundException e) {

addInfo( "WebServices-API: ", "no" );

}

try {

Class.forName( "javax.microedition.sip.SipConnection");

addInfo( "SIP-API: ", "yes" );

} catch (ClassNotFoundException e) {

addInfo( "SIP-API: ", "no" );

}

try {

Class.forName( "com.nokia.mid.ui.FullCanvas");

addInfo( "Nokia-UI-API: ", "yes" );

} catch (ClassNotFoundException e) {

addInfo( "Nokia-UI-API: ", "no" );

}

try {

Class.forName( "com.siemens.mp.MIDlet");

addInfo( "Siemens-Extension-API: ", "yes" );

try {

Class.forName( "com.siemens.mp.color_game.GameCanvas");

addInfo( "Siemens-ColorGame-API: ", "yes" );

} catch (ClassNotFoundException e) {

addInfo( "Siemens-ColorGame-API: ", "no" );

}

} catch (ClassNotFoundException e) {

addInfo( "Siemens-Extension-API: ", "no" );

}

}

附表：屬性表

表1 MMAPI屬性

 表2 Wireless Messaging API屬性

 表3FileConnection API