addItem « JComboBox « Java Swing Q&A





1. JComboBox.addItem for null objects    stackoverflow.com

HI, I have a JComboBox to which I'm adding my custom object items. But sometimes the object added are empty. So, when the comboBox has empty items in it, it collapses and ...

2. Problems with JComboBox additem() method    coderanch.com

I dynamically build a user defined series of JComboBoxes via a loop. During the build i test if a certain condiion is true, if true I add an item to the JcomboBox currently being built. Problem is that when i add an item, i end up adding the new item to each box, 2 time. Hopefully fresher eyes can spot my ...

3. How do you use JComboBox addItem(Object)    coderanch.com

simple demo (in this name appears, click a name to get the value) import javax.swing.*; import java.awt.*; import java.awt.event.*; class Testing extends JFrame { Beer[] beers = {new Beer("Budweiser",1.50),new Beer("Millers",2.00), new Beer("Coors",5.00)}; JComboBox cbo = new JComboBox(beers); public Testing() { setLocation(400,300); setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); cbo.setEditable(true); JPanel jp = new JPanel(); jp.add(cbo); getContentPane().add(jp); pack(); cbo.addActionListener(new ActionListener(){ public void actionPerformed(ActionEvent ae){ JOptionPane.showMessageDialog(getContentPane(),"Value = "+((Beer)cbo.getSelectedItem()).value); } ...