;
final String [ ] b = {"请选择类别","计算机安全类", "数据库类", "高级编程语言类","数据结构类","
计算机网络类","习题集类","各种
软件使用类","计算机原理类"};
final JComboBox b0=new JComboBox(b);
c.add(b0);c.add(b11);
c.add(sPane);
c.add(b1);
b11.addActionListener( new ActionListener( )
{
public void actionPerformed(ActionEvent e)
{
for( int i=1;i<9;i++)
{if(b0.g