Filtering a Table using a Combobox in java

Question

I have got a table and four combo-boxes namely "Asset Categories","Department:","Branches:" and "Asset State".

problem: Now i want to be able to filter my table in such a way that i can select a category of an asset "LAND & BUILDING" and will want to select the branch of the asset.

so when i select "LAND & BUILDING" it shows in my table and when i select a branch, it also appears in the table. so the output in the table becomes

 ASSET CATEGORY   |   BRANCHES
------------------|-------------
LAND & BUILDING   |   BRANCH 1

and so on for the other combo-boxes. I would really appreciate the help thanks

Answer 1

Table sorting and filtering is managed by a sorter object. The easiest way to provide a sorter object is to set autoCreateRowSorter bound property to true:

JTable table = new JTable();
table.setAutoCreateRowSorter(true);

And then, you can use RowFilter.regexFilter(String regex, int... indices) with the sorter.
Pleas look into the section Sorting and Filter section of the official tutorial page which contains example. You can use ItemListener with the JComboBox to create new filter to work with using the regexFiler function on item selection event.

jComboBox2.addItemListener(new ItemListener() {

   @Override
   public void itemStateChanged(ItemEvent e) {

     JComboBox comb = (JComboBox)e.getSource();
     String selText = (String) comb.getSelectedItem();
     RowFilter<DefaultTableModel, Object> rf = null;

     try {
         rf = RowFilter.regexFilter(selText,
                                 table.getColumnModel().getColumnIndex("ASSET CATEGORY"));
      } catch (PatternSyntaxException ex) {
                     ex.printStackTrace();
      }
      ((TableRowSorter)table.getRowSorter()).setRowFilter(rf);

     }
});