最近学孔老师视频时，调用老师源代码出错，Jlist需要加泛型吗

DefaultListModel is a raw type. References to generic type DefaultListModel should be parameterized
JList is a raw type. References to generic type JList should be
parameterized

谢谢各位老师

http://blog.csdn.net/maoyeqiu/article/details/50054075