Simple JTable / Select Row example?

Question

Hi - I'm having a really hard time wrapping my brain around JTables and their events. Can anybody give me just a real simple example of how to get the value of whatever cell (row, preferrably) by clicking on that cell / row?

Answer 1

Hey there,
im currently doing Jtables within a system i am coding too so thought i would help ya out!
1. You can recognise if a row is selected within your table by using a possible two methods: example of how this can be implemented:
//This method used for only one row at a time being selected
int selectedRow = table.getSelectedRow(); (table being the name of your JTable obviously)
                    if (selectedRow == -1) {//When there is no selected row show error message
                         JOptionPane.showMessageDialog(null, "Must select an employee from the table", "Error Message",
                                                  JOptionPane.ERROR_MESSAGE);
                    else {
                    //DO SOMETHING                    }
               }2. Or you could use the public int [ ] getSelectedRows() method of recognising selected JTable rows: example of how u might implement this, this returns an array of interger values when 1 or more rows are selected:
int [ ] rowselected = table.getSelectedRows();
//In order to go through each selected row and do something with it a loop is obviously needed like:
for (int i = 0; i < rowselected.length; i++) {
                    String empName = (String)(table.getValueAt(rowselected,0));
                    System.out.println(empName);
Hope this helps ;-)