Jan 21, 2013 · Use the toArray() method of the ArrayList class and pass it into the constructor of the JComboBox. See the JavaDoc and tutorial for more info. If you're doing something like ArrayList <Person>. in your Person class, you can define toString () which will adjust what your value is for the ComboBox.

Mar 2, 2013 · // Create an ActionListener for the JComboBox component. comboBox.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent event) { // Get the source of the component, which is our combo. // box. JComboBox comboBox = (JComboBox) event.getSource(); Object selected = comboBox.getSelectedItem();

Jun 1, 2022 · setActionCommand (String a) : sets the action command that should be included in the event sent to actionListeners. getUI () : returns the look and feel object that renders this component.

Jun 19, 2015 · The ComboBox control has a method called setOnAction. This method takes in an EventHandler that is called as described by the documentation: The ComboBox action, which is invoked whenever the Com...

The combo box fires an action event when the user selects an item from the combo box's menu. See How to Write an Action Listener, for general information about implementing action listeners.

Solution: Always use .toArray (new String [0]) to convert the ArrayList into a compatible array format. Learn how to effectively populate a JComboBox with data from an ArrayList in Java, …

To detect selection changes in a JComboBox in Java, you can utilize the ActionListener interface. When a user selects a different item from the combo box, the actionPerformed () method will be triggered, allowing you to respond to the event accordingly.

Jun 7, 2024 · In this guide, we’ll explore how to use ItemListener to respond to selection changes within your JComboBox, enabling you to create dynamic and interactive user interfaces. Understanding ItemListener. The ItemListener interface is designed to handle events triggered by state changes in item-selectable components like JComboBox.

The following code shows how to create ArrayList based combobox model for JComboBox. import java.awt.Container; import java.util.ArrayList; import java.util.Collection; //w w w . ja v a 2s .co m import javax.swing.AbstractListModel; import javax.swing.ComboBoxModel; import javax.swing.JComboBox; import javax.swing.JFrame;

May 7, 2014 · I have a text field that shows one item selected at a time either from a listbox or from combobox. When the item is selected it shows its price in the text field.