通过继承下拉框JComboBox来满足应用程序的特定需要，并在此基础上实现其他一些功能-through inheritance drop-down box JComboBox applications to meet the specific needs and, in this on the basis of other features

Sample code for jComboBox

ComponentSet包括：JComboBox、JTable、Datepicker等.-ComponentSet include: JComboBox, JTable, Datepicker and so on.