下面是几条定义类的语句,只能被继承的类而不能实例化对象的是( ).A.class student B.public class studentC.abstract class student D.sealed class student
问题描述:
下面是几条定义类的语句,只能被继承的类而不能实例化对象的是( ).
A.class student B.public class student
C.abstract class student D.sealed class student
答
C
抽象类