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单选题
public class Test { public static void main（String[] args） { int x = 0； assert （x > 0）： “assertion failed”； System.out.println（“finished”）； } } What is the result？（）
A
finished
B
Compilation fails.
C
An AssertionError is thrown.
D
An AssertionError is thrown and finished is output.
参考答案
参考解析
解析：
This question is a bit tricky because it lacks the following information: It should include a statement that says whether or not assertions are enabled. If they are indeed enabled, the
correction answer is C. but if they are not, the correct answer is A. Assertions are not enabled by default so if the question is not changed, the most logical answer is A.
correction answer is C. but if they are not, the correct answer is A. Assertions are not enabled by default so if the question is not changed, the most logical answer is A.
更多 “单选题public class Test { public static void main（String[] args） { int x = 0； assert （x 0）： “assertion failed”； System.out.println（“finished”）； } } What is the result？（）A finishedB Compilation fails.C An AssertionError is thrown.D An AssertionError is thrown and finished is output.” 相关考题
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多选题Given the following code fragment： public void create（） { Vector myVect； myVect = new Vector（）； } Which of the following statements are true？（）AThe declaration on line 2 does not allocate memory space for the variable myVect.BThe declaration on line 2 allocates memory space for a reference to a Vector object.CThe statement on line 2 creates an object of class Vector.DThe statement on line 3 creates an object of class Vector.EThe statement on line 3 allocates memory space for an object of class Vector.
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–2B
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单选题1. public class X implements Runnable（ 2. private int x； 3. private int y； 4. 5. public static void main（String[]args） 6. X that = new X（）； 7. （new Thread（that））.start（）； 8. （new Thread（that））.start（）； 9. ） 10. 11. public void run（） （ 12. for （；；） （ 13. x++； 14. y++； 15. System.out.printIn（“x=” + x + “， y = ” + y）； 16. ） 17. ） What is the result？（）A
Errors at lines 7 and 8 cause compilation to fail.B
The program prints pairs of values for x and y that might not always be the same on the same line （for example， “x=2， y=1”）.C
The program prints pairs of values for x and y that are always the same on the same line （for example， “x=1， y=1”. In addition， each value appears twice （for example， “x=1， y=1” followed by “x=1， y=1”）.D
The program prints pairs of values for x and y that are always the same on the same line （for example， “x=1， y=1”. In addition， each value appears only for once （for example， “x=1， y=1” followed by “x=2， y=2”）.
考题
单选题Which declaration prevents creating a subclass of an outer class？（）A
Static class FooBar{}B
Private class FooBar{}C
Abstract public class FooBar{}D
Final public class FooBar{}E
Final abstract class FooBar{}
考题
单选题Which statement about static inner classes is true？ （）A
An anonymous class can be declared as static.B
A static inner class cannot be a static member of the outer class.C
A static inner class does not require an instance of the enclosing class.D
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考题
多选题Which two are benefits of fully encapsulating a class？（）APerformance of class methods is improved.BImplementation details of the class are hidden.CAccess modifiers can be omitted on class data members.DCode that uses the encapsulation class can access data members directly.EInternal operation of the class can be modified without impacting clients of that class.
考题
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考题
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