Programar evento de un JComboBox en JAVA??

[javibrezmes]

Bueno aqui te dejo un pequeño ejemplo espero que te sirva...

Código PHP:

  import java.awt.GridBagLayout; 
import javax.swing.JPanel; 
import javax.swing.JComboBox; 
 
import java.awt.GridBagConstraints; 
import java.awt.event.ItemEvent; 
import java.awt.event.ItemListener; 
 
public class Prueba extends JPanel { 
 
    private static final long serialVersionUID = 1L; 
    private JComboBox jComboBox = null; 
 
    /** 
     * This is the default constructor 
     */ 
    public Prueba() { 
        super(); 
        initialize(); 
    } 
 
    /** 
     * This method initializes this 
     *  
     * @return void 
     */ 
    private void initialize() { 
        GridBagConstraints gridBagConstraints = new GridBagConstraints(); 
        gridBagConstraints.fill = GridBagConstraints.VERTICAL; 
        gridBagConstraints.gridy = 0; 
        gridBagConstraints.weightx = 1.0; 
        gridBagConstraints.gridx = 0; 
        this.setSize(300, 200); 
        this.setLayout(new GridBagLayout()); 
        this.add(getJComboBox(), gridBagConstraints); 
         
        jComboBox.addItem("France");  
        jComboBox.addItem("Germany");  
        jComboBox.addItem("Italy");  
        jComboBox.addItem("Japan");  
         
        addActions(); 
    } 
 
    /** 
     * This method initializes jComboBox     
     *      
     * @return javax.swing.JComboBox     
     */ 
    private JComboBox getJComboBox() { 
        if (jComboBox == null) { 
            jComboBox = new JComboBox(); 
        } 
        return jComboBox; 
    } 
     
    public void addActions() 
    { 
        /* 
         * ###################################### 
         *         ACCION DEL JCOMBOBOX 
         * ###################################### 
         */ 
        final ItemListener changeClick = new ItemListener() 
        { 
            public void itemStateChanged(ItemEvent e)  
            { 
                if(jComboBox.getSelectedItem().equals(e.getItem())) 
                { 
                    System.out.println("Hola "+e.getItem().toString()); 
                } 
            } 
        }; 
         
        this.jComboBox.addItemListener(changeClick); 
    } 
 
}