题库 第6407页
When a class implements an interface, it can define some methods
When a class implements an interface, it can define some methods of the interface as needed, and leaves some untouched.…
在对不带头结点的链队列作出队操作时，不会改变头指针的值。
在对不带头结点的链队列作出队操作时，不会改变头指针的值。 ~@[](2)答案：FALSE…
An abstract class can have instances created using the construct
An abstract class can have instances created using the constructor of the abstract class. ~@[](2)答案：FALSE…
An abstract class can be extended.
An abstract class can be extended. ~@[](2)答案：TRUE…
An interface can extend from one or more interfaces.
An interface can extend from one or more interfaces. ~@[](2)答案：TRUE…
An interface can extend an abstract class.
An interface can extend an abstract class. ~@[](2)答案：FALSE…
A subclass of a nonabstract superclass cannot be abstract.
A subclass of a nonabstract superclass cannot be abstract. ~@[](2)答案：FALSE…
An abstract class can extend an interface.
An abstract class can extend an interface. ~@[](2)答案：FALSE…
An interface is compiled into a separate bytecode file.
An interface is compiled into a separate bytecode file. ~@[](2)答案：TRUE…
An abstract method must be nonstatic.
An abstract method must be nonstatic. ~@[](2)答案：TRUE…
