defaulttablemodel

I am trying to add a jcheckbox to the first column of a JTable, which uses a DefaultTableModel . I tried returning a Boolean.class for that column, but it doesn't work. I already have a jcombobox in the last column, but using the same method I used to add that in order to add a jcheckbox doesn't work. I read online that java automatically returns a checkbox for you if you render a Boolean.class in a column, but using it also doesn't work. I think this might be a problem in the way I am ordering the components. //import statements. public class CourseSelection extends GUIDesign implements

I'm trying to create a simple To-Do list Java application connected to MS Access and I used JTable and DefaultTableModel to display the list. I want to mark completed tasks by changing its color when I click on a button. I have a boolean field named ' completed ' that serves as indicator. String header[] = {"priority", "task"}; String data[][]; DefaultTableModel model = new DefaultTableModel(data, header); JTable table = new JTable(model); // to be replaced with code that affects only specific cells not the whole table table.setFont(customFont); I already have a Font object that I called

I have a jTable which loads data from a DB query This load produces 32 results, thus 32 rows in the TableModel With myTable.getRowCount() i correctly get 32 Then i create a new empty model and load it into the table After that, if i call myTable.getRowCount() i still get 32 But if i call myModel.getRowCount() i correctly get 0! Why there should be difference between table.getRowCount() and model.getRowCount() if my table is using the model? ... System.out.println(myTable.getRowCount()); // 32 String[] columnNames= {null}; DefaultTableModel emptyModel= new DefaultTableModel(null, columnNames);