G:\java\testpackage>javac Dog.java
Dog.java:8: com.xinwen365.nihui.Cat 在 com.xinwen365.nihui 中不是公共的;无法从
外部软件包中对其进行访问
                        com.xinwen365.nihui.Cat c=new com.xinwen365.nihui.Cat();                                           ^
Dog.java:8: com.xinwen365.nihui.Cat 在 com.xinwen365.nihui 中不是公共的;无法从
外部软件包中对其进行访问
                        com.xinwen365.nihui.Cat c=new com.xinwen365.nihui.Cat();                                                                         ^
2 错误G:\java\testpackage>