多选题Which three statements are true?()AA final method in class X can be abstract if and only if X is abstract.BA protected method in class X can be overridden by any subclass of X.CA private static method can be called only within other static methods in class X.DA non-static public final method in class X can be overridden in any subclass of X.EA public static method in class X can be called by a subclass of X without explicitly referencing the class X.FA method with the same signature as a private final method in class X can be implemented in a subclass of X.GA protected method in class X can be overridden by a subclass of X only if the subclass is in the same package as X.

多选题
Which three statements are true?()
A

A final method in class X can be abstract if and only if X is abstract.

B

A protected method in class X can be overridden by any subclass of X.

C

A private static method can be called only within other static methods in class X.

D

A non-static public final method in class X can be overridden in any subclass of X.

E

A public static method in class X can be called by a subclass of X without explicitly referencing the class X.

F

A method with the same signature as a private final method in class X can be implemented in a subclass of X.

G

A protected method in class X can be overridden by a subclass of X only if the subclass is in the same package as X.


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多选题Which the following two statements are true?()AAn inner class may be declared as static.BAn anonymous inner class can be declared as public.CAn anonymous inner class can be declared as private.DAn anonymous inner class can extend an abstract class.EAn anonymous inner class can be declared as protected.

单选题Which will declare a method that is available to all members of the same package and can be referenced  without an instance of the class?()A Abstract public void methoda();B Public abstract double methoda();C Static void methoda(double d1){}D Public native double methoda(){}E Protected void methoda(double d1){}

多选题Which two statements are true about using the isUserInRole method to implement security in a Java EEapplication?()AIt can be invoked only from the doGet or doPost methods.BIt can be used independently of the getRemoteUser method.CCan return true even when its argument is NOT defined as a valid role name in the deployment descriptor.DUsing the isUserInRole method overrides any declarative authentication related to the method in which it is invoked.