下面将列举一个实例，这个实例将通过创建一个实现了抽象类AbstractListModel的DataModel类来创建一个列表框，其代码如下所示:
publicclassBWF {
publicstaticvoidmain(String[]args) {
JFramejf=newJFrame("博为峰教育");
ContainercontentPane=jf.getContentPane();
ListModelmode=newDataModel();
JListlist=newJList(mode);
list.setVisibleRowCount(5);
list.setBorder(BorderFactory.createTitledBorder("配置一台电脑需要的组件"));
contentPane.add(newJScrollPane(list));
jf.pack();
jf.setVisible(true);
jf.addWindowListener(newWindowAdapter() {
publicvoidwindowClosing(WindowEvente) {
System.exit(0);
}
});
}
}
classDataModelextendsAbstractListModel{
String[]s={"主板","显示器","内存","CPU","硬盘","电源","键盘","鼠标","显卡"};
publicintgetSize() {
returns.length;
}
publicString getElementAt(intindex) {
return(index+1)+"."+s[index++];
}
}
