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以public修饰的类如:public class Car{…} 则Car()
- A、可被其它程序包中的类使用
- B、仅能被本程序包中的类使用
- C、不能被任意其它类使用
- D、不能被其它类继承
参考答案
更多 “以public修饰的类如:public class Car{…} 则Car()A、可被其它程序包中的类使用B、仅能被本程序包中的类使用C、不能被任意其它类使用D、不能被其它类继承” 相关考题
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单选题11. abstract class Vehicle { public int speed() { return 0; } } 12. class Car extends Vehicle { public int speed() { return 60; } } 13. class RaceCar extends Car { public int speed() { return 150; }} ...... 21. RaceCar racer = new RaceCar(); 22. Car car = new RaceCar(); 23. Vehicle vehicle = new RaceCar(); 24. System.out.println(racer.speed() + “, „ + car.speed() 25. + “, “+ vehicle.speed()); What is the result?()A
0, 0,0B
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Compilation fails.D
150, 150, 150E
An exception is thrown at runtime.
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考题
单选题以public修饰的类如:public class Car{…} 则Car()A
可被其它程序包中的类使用B
仅能被本程序包中的类使用C
不能被任意其它类使用D
不能被其它类继承
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