已知类的继承关系如下: classEmployee; classManagerextendsEmployeer; classDirectorextendsEmployee; 则以下语句能通过编译的有哪些?
已知类的继承关系如下: classEmployee; classManagerextendsEmployeer; classDirectorextendsEmployee; 则以下语句能通过编译的有哪些?
已知类的继承关系如下: classEmployee; classManagerextendsEmployee; classDirectorextendsEmployee; 下语句能通过编译的有哪些? A: Employeee=newManager(); B: Directord=newManager(); C: Directord=newEmployee(); D: Managerm=newDirector();
已知类的继承关系如下: classEmployee; classManagerextendsEmployee; classDirectorextendsEmployee; 下语句能通过编译的有哪些? A: Employeee=newManager(); B: Directord=newManager(); C: Directord=newEmployee(); D: Managerm=newDirector();
已知类的继承关系如下: classEmployee; classManagerextendsEmployeer; classDirectorextendsEmployee; 下语句能通过编译的有哪些? A: Employeee=newManager(); B: Directord=newManager(); C: Directord=newEmployee(); D: Managerm=newDirector();
已知类的继承关系如下: classEmployee; classManagerextendsEmployeer; classDirectorextendsEmployee; 下语句能通过编译的有哪些? A: Employeee=newManager(); B: Directord=newManager(); C: Directord=newEmployee(); D: Managerm=newDirector();
已知类关系如下:ClassEmployee{}ClassManagerextendsEmployee{}ClassDirectorextendsEmployee{}则下列语句正确的是:()。 A: Employee e=new Manager(); B: Director d=new Manager(); C: Director d =new Employee (); D: Manager m=new Director ();
已知类关系如下:ClassEmployee{}ClassManagerextendsEmployee{}ClassDirectorextendsEmployee{}则下列语句正确的是:()。 A: Employee e=new Manager(); B: Director d=new Manager(); C: Director d =new Employee (); D: Manager m=new Director ();
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