MDM (Mobile Device management) in J2ME - java-me

Question

I want to implement MDM in J2ME. Whenever I update App, I am able to upload New App in Mobile, I can upload it successfully. But My Problem is that, I want to replace existing App and then want to upload new App. As of now I can add App on Device with Different name (Same App Name is not working) but cant replace App.
Here is my code for MDM:
public void getUpdateApp() {
new Thread(new Runnable() {
public void run() {
try {
DataHelper dh = new DataHelper(parent);
dh.openRecord();
String response_rms = dh.getupdateAppinfo_str();
System.out.println("response from RMS of Update App info in appupdate---" + response_rms);
System.out.println("Sending update App Call.");
HttpConn httpConnect = new HttpConn(parent);
UserInfo userInfo = getUserInfo();
String data = "AppCode=" + AppData.appCode+ "&CurrentVersion=" + AppData.currentversion
+ "&TerminalNumber=" + userInfo.getTerminalNumber()
+ "&apifunction=" + "GetAppUpdate";
httpConnect.sendPostRequest_appupdate(AppData.AppUpdateURL, data, new ConnectionListener() {
public void onRequestFailure(Object title, Object message) {
System.out.println("==>GetUpdateApp Failure\nTitle:"
+ (String) title
+ "\n Failure Message" + (String) message);
showMessageDialog((String) title, (String) message, new SettingsForm("Settings", parent), 2000);
}
public void onRequestSuccess(Object httpResponse) {
try {
System.out.println("==>On Success--of Update App");
String response = (String) httpResponse;
System.out.println("==>Login Form--Update App \nResponse:" + response);
JSONObject jsonObject = new JSONObject(response);
int responseCode = Integer.parseInt(jsonObject.getString("ResponseCode"));
switch (responseCode) {
case 000: {
String latestbuild = jsonObject.getString("LatestBuild");
String latestversion = jsonObject.getString("LatestVersion");
String downloadURL = jsonObject.getString("DownloadURL");
if (latestversion != null) {
if (!latestversion.equals(AppData.currentversion) || !latestbuild.equals(AppData.currentBuild)) {
if (Integer.parseInt(latestbuild) > Integer.parseInt(AppData.currentBuild)) {
System.out.println("Download URL--" + downloadURL);
// parent.platformRequest(downloadURL);
System.out.println("platform request boolean variable returns---"+ parent.platformRequest(downloadURL));
parent.platformRequest(downloadURL);
parent.destroyApp(true);
} else {
System.out.println("Incomapatible types");
showMessageDialog("Alert", "No new updates available", new SettingsForm("Settings", parent),2000);
}
} else {
System.out.println("App Version Number is same,No New Build Available");
showMessageDialog("Alert", "Application is already upto date", new SettingsForm("Settings", parent),2000);
}
} else {
System.out.println("App version not available on server");
showMessageDialog("Alert", "No new updates available", new SettingsForm("Settings", parent),2000);
}
break;
}
}
} catch (JSONException ex) {
ex.printStackTrace();
showdisplayExceptionDialog(ex, new SettingsForm("Settings", parent));
} catch (ConnectionNotFoundException ex) {
showdisplayExceptionDialog(ex, new SettingsForm("Settings", parent));
}
}
});
} catch (Exception e) {
showdisplayExceptionDialog(e, new SettingsForm("Settings", parent));
}
}
}).start();
}
If any 1 has any idea regarding Replacing App in J2ME then please Help me. Thanks a lot in Advance.