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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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出自：Oracle认证

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