Android Question doubts about definition of java object

Sub Globals
    Private temp As JavaObject
    Private callB As JavaObject
    Private temdata As JavaObject
End Sub

Sub Activity_Create(FirstTime As Boolean)
    temp = ThermalImageUtil ' incializa el metodo de captura
End Sub

Sub Activity_Resume

            temdata = TemperatureDataUtil
           
            callB = CallbackUtil_Temp
           
            Dim distance As Float = 50
           
            temdata = temp.RunMethod("getDataAndBitmap",Array As Object(distance,True, callB))
       
End Sub


Sub ThermalImageUtil As JavaObject
    Dim jo As JavaObject
    Return jo.InitializeNewInstance("com.common.thermalimage.ThermalImageUtil", Array(GetContext))
End Sub

Sub CallbackUtil_Temp As JavaObject
    Dim jo As JavaObject
    Return jo.InitializeStatic("com.common.thermalimage.HotImageCallback.Stub")
End Sub

Sub TemperatureDataUtil As JavaObject
    Dim jo As JavaObject
    Return jo.InitializeStatic("com.common.thermalimage.TemperatureData")
End Sub

Sub GetContext As JavaObject
    Return GetBA.GetField("context")
End Sub

Sub GetBA As JavaObject
    Dim jo As JavaObject
    Dim cls As String = Me
    cls = cls.SubString("class ".Length)
    jo.InitializeStatic(cls)
    Return jo.GetFieldJO("processBA")
End Sub

  public TemperatureData getDataAndBitmap(float distanceFromApp, boolean needRecordTemAuto, HotImageCallback callBack) {
    Log.i(TAG, "+ this.sdf.format(new Date()));
    if (!this.isConneted) {
      Log.i(TAG, ");
      try {
        if (callBack != null)
          callBack.onTemperatureFail("connect service fail,please restart your app or check the TemperatureService app is installed");
      } catch (Exception exception) {}
      return null;
    }
    if (this.devServ != null && this.devServ.asBinder().isBinderAlive())
      try {
        TemperatureData data = this.devServ.getDataAndBitmapByFix(distanceFromApp, needRecordTemAuto, callBack);
        Log.i(TAG, "+ this.sdf.format(new Date()));
        return data;
      } catch (RemoteException e) {
        e.printStackTrace();
      } 
    return null;
  }