根据java中表行的选择，填充具有不同值的表格单元格的组合框

I want to populate the combo box with the value from database based on the selection of table row, it works, but only when I select the different cell of the row then select required combo box cell. But if I select the combobox cell of another row, it shows previous items, and after selecting one of them, if I again click on the combobox it will populate with fresh values. I want the fresh values be populated when I click on row or even combo box cell. Please help. The code is given below:-I want to populate the combo box with the value