Filtering with Datefield and SimpleStringFilter not filtering.

I'm learning how to add filter fields in a grid by following the tutorial So far it's great! I can add the filters in a row! But I have a column with dates, and wanted to implement a datefield in the filter.

I need help troubleshooting why this is happening.

So what I have is this:

BeanItemContainer<Bean> beanList = new BeanItemContainer<Bean>(Bean.class);

Grid resultsGrid = new Grid();
resultsGrid.setContainerDataSource(beanList);

HeaderRow filterRow = resultsGrid.appendHeaderRow();

                for (Object pid: resultsGrid.getContainerDataSource().getContainerPropertyIds()){
                       HeaderCell cell = filterRow.getCell(pid);
                       
                       
                       if (pid.toString().contains("date")){
                           DateField filterDate = new DateField();
                           filterDate.setHeight("15px");
                           filterDate.setStyleName("filterField");
                           filterDate.setDateFormat("MM-dd-yyyy");
                           filterDate.addValueChangeListener(change ->{beanList.removeContainerFilters(pid);
                               if (change.getProperty() !=null)
                                   System.out.println(filterDate.getValue().toString());
                               SimpleDateFormat filterFormat = new SimpleDateFormat("MM-dd-yyyy");
                               try{
                                   System.out.println(filterFormat.format(filterDate.getValue()));
                               }catch(Exception e){
                                   e.printStackTrace();
                               }
                               try{
                                   beanList.addContainerFilter(new SimpleStringFilter(pid,filterFormat.format(filterDate.getValue()),true,false));
                               }catch(Exception e){
                                   e.printStackTrace();
                               }
                           });
                           cell.setComponent(filterDate);
                       }else {
                           TextField filterField = new TextField();
                           filterField.setColumns(5);
                           filterField.setWidth("100%");
                           filterField.setHeight("15px");
                           filterField.setStyleName("filterField");
                           
                           
                           filterField.addTextChangeListener(change ->{beanList.removeContainerFilters(pid);                       
                           if (! change.getText().isEmpty())
                               beanList.addContainerFilter(new SimpleStringFilter(pid,change.getText(),true,false));
                           });
                           cell.setComponent(filterField);
                       }
                       

Whenever I use the date filter, nothing works?

Beginning:

After Selecting Date:

I tested the output of filterFormat.format(filterDate.getValue()) with a system.out.Println() and it says "11-02-2016"

However, just using a regular old textfield (not datefield) it works pretty good, I just need a leading zero on my day. But otherwise, it will filter! But I would really like to add a datefilter.

I am pretty bad at coding so any suggestions are welcome.

Date is not a String. I recommend thus to use Compare class for filtering, e.g. Compare.Greater(...), Compare.LessOrEqual(...) etc.