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();
存在Employee类,如何创建一个长度为3的Employee类型数组?() A: Employee[3]e; B: Employee[]e=newEmployee[3]; C: Employeee[3]; D: Employee[3]e=newEmployee[];
存在Employee类,如何创建一个长度为3的Employee类型数组?() A: Employee[3]e; B: Employee[]e=newEmployee[3]; C: Employeee[3]; D: Employee[3]e=newEmployee[];
已知类的继承关系如下: A: assEmployee; B: assManagerextendsEmployeer; C: assDirectorextendsEmployee; D: 下语句能通过编译的有哪些? E: Employeee=newManager(); F: Directord=newManager(); G: Directord=newEmployee(); H: Managerm=newDirector();
已知类的继承关系如下: A: assEmployee; B: assManagerextendsEmployeer; C: assDirectorextendsEmployee; D: 下语句能通过编译的有哪些? E: Employeee=newManager(); F: Directord=newManager(); G: Directord=newEmployee(); H: Managerm=newDirector();