答案:INTI
答案:INTI
A. super
B. this
C. then
D. Import
A. Employee e=new Manager();
B. Director d=new Manager();
C. Director d=new Employee();
D. Manager m=new Director();
A. char ch=’a’;
B. double d=2.0;
C. int c=2;
D. float d=2.0;
A. Java类不允许多重继承
B. Java接口不允许多继承
C. 接口和类都允许多继承
D. 接口和类都不允许多继承
A. 嵌套异常
B. 声明异常
C. 捕获异常
D. 抛出异常
A. interface B { void print() { } }
B. abstract interface B { void print() }
C. abstract interface B extends A1,A2 { //A1.A2为已定义的接口 abstract void print(){ }; }
D. interface B { void print();}