父类必须有一个无参构造,不然会报Implicit super constructor Parent() is undefined. Must explicitly invoke another constructor
转载于:https://my.oschina.net/architectliuyuanyuan/blog/3053843
父类必须有一个无参构造,不然会报Implicit super constructor Parent() is undefined. Must explicitly invoke another constructor
转载于:https://my.oschina.net/architectliuyuanyuan/blog/3053843