comboboxmodel

I've 3 comboboxes, upon selecting first combobox, the rest should be updated but my code doesn't seems to be working. Please help in this guys. Here is my code(since my code very long so I'll write error part only). // example code public class GuiComponents { JComboBox<String> comboBox1, comboBox2, comboBox3; public GuiComponents() { ......... ......... String[] element1 = {"item1", "item2", "item3"}; String[] element2 = {"item1", "item2", item3}; String[] element3 = {"item1", "item2", "item3"}; comboBox1.addItemListener(new ItemListener() { @Override public void itemStateChanged(ItemEvent

I have a Person [ ] with three Persons (p1,p2,p3). Person class has two attributes name and email . I want to add all names of Person[] in one JComboBox and all emails in another JComboBox. I used the following code. Person p1 = new Person("Smith", "smith@mail.com"); Person p2 = new Person("Tom", "tom@gmail.com"); Person p3 = new Person("John","john@mail.com"); Person[] per_arr = new Person[] { p1, p2, p3}; JFrame frame = new JFrame(); JPanel panel = new JPanel(); JComboBox<String> combo1 = new JComboBox<String>(); JComboBox<String> combo2 = new JComboBox<String>(); for (Person p : per_arr) {