Given：
Which two statements are true？（）
A.The output could be 8-1 7-2 8-2 7-1
B.The output could be 7-1 7-2 8-1 6-1
C.The output could be 8-1 7-1 7-2 8-2
D.The output could be 8-1 8-2 7-1 7-2
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Given：
foo and bar are public references available to many other threads. foo refers to a Thread and bar is anObject.
The thread foo is currently executing bar.wait（）.
From another thread，what provides the most reliable wayto ensure that foo will stop executing wait（）？
A.foo.notify（）；
B.bar.notify（）；
C.foo.notifyAll（）；
D.Thread.notify（）；
E.bar.notifyAll（）；
Click the Exhibit button.
Which two are possible results？（）
A.0， 2， 4， 4， 6， 8， 10， 6
B.0， 2， 4， 6， 8， 10， 2， 4
C.0， 2， 4， 6， 8， 10， 12， 14
D.0， 0， 2， 2， 4， 4， 6， 6， 8， 8， 10， 10， 12， 12， 14， 14
Given:
What is the result？（）
A.1 2 3
B.Compilation fails because of an error in line 12.
C.Compilation fails because of an error in line 13.
D.Compilation fails because of an error in line 14.
E.A ClassCastException is thrown at runtime.
Given：
What is the result？（）
A.TestA
B.TestB
C.Compilation fails.
D.An exception is thrown at runtime.
Given：
Which code， inserted at line 16， correctly retrieves a local instance of a Point object？（）
A.Point p = Line.getPoint（）；
B.Line.Point p = Line.getPoint（）；
C.Point p = （new Line（））.getPoint（）；
D.Line.Point p = （new Line（））.getPoint（）；
Given：
What is the result？（）
A.Compilation succeeds.
B.Exactly one class does NOT compile.
C.Exactly two classes do NOT compile.
D.Exactly four classes do NOT compile.
E.Exactly three classes do NOT compile.
Given：
Which two methods， inserted individually， correctly complete the Three class？（）
A.public void foo（） {}
B.public int foo（） { return 3； }
C.public Two foo（） { return this； }
D.public One foo（） { return this； }
E.public Object foo（） { return this； }
Given：
What is the result？（）
A.3
B.23
C.32
D.123
E.321
Given：
What is the result？（）
A.2
B.3
C.4
D.6
E.7
Given：
10.interface Data { public void load（）； }
11.abstract class Info { public abstract void load（）； }
Which class correctly uses the Data interface and Info class？（）
A.
B.
C.
D.
最新试题
Given：What is the result？（）
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？（）
Click the Exhibit button.What two must the programmer do to correct the compilation errors？（）
Given：Which code， inserted at line 16， correctly retrieves a local instance of a Point object？（）
Given：What is the result？（）
A programmer has an algorithm that requires a java.util.List that provides an efficient implementation of add（0， object）， but does NOT need to support quick random access.What supports these requirements？（）
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：What is the result？（）
Given：A programmer is developing a class Key， that will be used as a key in a standard java.util.HashMap. Which two methods should be overridden to assure that Key works correctly as a key？（）