A.class Man extends Dog { }
B.class Man implements Dog { }
C.class Man { private BestFriend dog； }
D.class Man { private Dog bestFriend； }
E.class Man { private Dog
F.class Man { private BestFriend
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Given：
Which two， independently， will allow Sub to compile？（）
A.Change line 2 to：public int a；
B.Change line 2 to：protected int a；
C.Change line 13 to：public Sub（） { this（5）； }
D.Change line 13 to：public Sub（） { super（5）； }
Given：
Which five methods， inserted independently at line 5， will compile？（）
A.public int blipvert（int x） { return 0； }
B.private int blipvert（int x） { return 0； }
C.private int blipvert（long x） { return 0； }
D.protected long blipvert（int x） { return 0； }
E.protected int blipvert（long x） { return 0； }
F.protected long blipvert（long x） { return 0； }
Given：
What is the result?（）
A.0.0
B.Compilation fails.
C.A ParseException is thrown by the parse method at runtime.
D.A NumberFormatException is thrown by the parse method at runtime.
Given：
What is the result？（）
A.test
B.null
C.An exception is thrown at runtime.
D.Compilation fails because of an error in line 1.
E.Compilation fails because of an error in line 4.
F.Compilation fails because of an error in line 5.
Given：
What is the result？（）
A.Compilation fails.
B.atom granite
C.granite granite
D.atom granite granite
E.An exception is thrown at runtime.
F.atom granite atom granite
Click the Exhibit button.
What is the result？（）
A.4321
B.0000
C.An exception is thrown at runtime.
D.Compilation fails because of an error in line 18.
Click the Exhibit button.
Which statement is true about the classes and interfaces in the exhibit？（）
A.Compilation will succeed for all classes and interfaces.
B.Compilation of class C will fail because of an error in line 2.
C.Compilation of class C will fail because of an error in line 6.
D.Compilation of class AImpl will fail because of an error in line 2.
Given：
Which code， inserted at line 14， allows the Sprite class to compile？（）
A.Direction d = NORTH；
B.Nav.Direction d = NORTH；
C.Direction d = Direction.NORTH；
D.Nav.Direction d = Nav.Direction.NORTH；
Given：
What is the result？（）
A.hi hi
B.hi world
C.world world
D.Compilation fails.
E.An exception is thrown at runtime.
最新试题
A team of programmers is involved in reviewing a proposed design for a new utility class. After some discussion， they realize that the current design allows other classes to access methods in the utility class that should be accessible only to methods within the utility class itself.What design issue has the team discovered？（）
Given a method that must ensure that its parameter is not null：What， inserted at line 12， is the appropriate way to handle a null value？（）
Given：When the doSomething method is called， after which line does the Object created in line 5 become available for garbage collection？（）
A class games.cards.Poker is correctly defined in the jar file Poker.jar. A user wants to execute the main method of Poker on a UNIX system using the command：java games.cards.Poker What allows the user to do this？（）
Given：Which command-line invocations will compile？（）
Given：What is the result？（）
Given：Which code， inserted at line 16， correctly retrieves a local instance of a Point object？（）
Given：Which line of code marks the earliest point that an object referenced by intObj becomes a candidate for garbage collection？（）
Given：What is the result？（）
Given：What is the result？（）