Best books about JAVA programming:

• Head First JAVA, Second Editon
• Effective Java Programming Language Guide
• Professional Java, JDK 5 Edition
• Ivor Horton's Beginning Java 2, JDK 5 Edition

JAVA JComboBox

This example shows how to extends JLabel and ListCellRenderer to disable serveral items in JComboBox. It includes 2 files: DisabledComboBoxExample.java and interface CanEnable.java

public interface CanEnable {

public void setEnabled(boolean isEnable);
public boolean isEnabled();

}