public class Panda extends Xx{
//報(bào)錯(cuò):Implicit super constructor Xx() is undefined for default constructor. Must define an explicit constructor
}
class Xx
{
public Xx(int i) {
System.out.println(12);
}
}
java：為什么子類一定要實(shí)現(xiàn)父類的有參構(gòu)造方法？
慕桂英3389331
2019-03-20 18:15:18
