Java by API/javax.swing/DefaultComboBoxModel

new DefaultComboBoxModel(Object obj)

   <source lang="java">

import java.awt.BorderLayout; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import javax.swing.DefaultComboBoxModel; import javax.swing.JButton; import javax.swing.JComboBox; import javax.swing.JFrame; import javax.swing.JList; import javax.swing.JPanel; import javax.swing.JScrollPane; public class MainClass {

 public static void main(final String args[]) {
   final String labels[] = { "A", "B", "C", "D", "E" };
   final DefaultComboBoxModel model = new DefaultComboBoxModel(labels);
   JFrame frame = new JFrame("Shared Data");
   frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
   JComboBox comboBox1 = new JComboBox(model);
   comboBox1.setMaximumRowCount(5);
   comboBox1.setEditable(true);
   frame.add(comboBox1, BorderLayout.NORTH);
   
   JList jlist = new JList(model);
   JScrollPane scrollPane = new JScrollPane(jlist);
   frame.add(scrollPane, BorderLayout.CENTER);
   JButton button = new JButton("Add");
   frame.add(button, BorderLayout.SOUTH);
   ActionListener actionListener = new ActionListener() {
     public void actionPerformed(ActionEvent actionEvent) {
       model.addElement("a");
     }
   };
   button.addActionListener(actionListener);

   frame.setSize(300, 200);
   frame.setVisible(true);
 }

}

      </source>