Apps help me to display string ?

[achilles205]

I'm a newbie in android, i want to find serial number of a android device ... Somebody can help me to display string "deviceId" ? Thank for your help
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final TelephonyManager tm = (TelephonyManager) getBaseContext().getSystemService(Context.TELEPHON Y_SERVICE);
final String tmDevice, tmSerial, tmPhone, androidId;
tmDevice = "" + tm.getDeviceId();
tmSerial = "" + tm.getSimSerialNumber();
androidId = "" + android.provider.Settings.Secure.getString(getCont entResolver(), android.provider.Settings.Secure.ANDROID_ID);

UUID deviceUuid = new UUID(androidId.hashCode(), ((long)tmDevice.hashCode() << 32) | tmSerial.hashCode());
String deviceId = deviceUuid.toString();