1.U right!While you init a subclass,the JVM would init a super class first.
2.A constructor must be defined as no return value,and has the same name with class
2.A constructor must be defined as no return value,and has the same name with class
调试欢乐多
类型一般为public(Class类就是例外)
"参数表"不用讨论了,那就是你自己想怎样定义就怎样定义了