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单项选择题 Given：

What is the result？（）

A. A new Item object is created with the preferred value in the id attribute.
B. The attribute id in the Item object is modified to the new value.
C. Compilation fails.
D. An exception is thrown at runtime.
E. The attribute id in the Item object remains unchanged.

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1.单项选择题 Given：

What is the result？（）

A. An exception is thrown at runtime.
B. int Long
C. Compilation fails.
D. Short Long

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2.单项选择题 Given：

Which statement is true？（）

A. The cardID and limit variables break polymorphism.
B. The code demonstrates polymorphism.
C. The ownerName variable breaks encapsulation.
D. The setCardInformation method breaks encapsulation.
E. The class is fully encapsulated.

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3.单项选择题 Click the Exhibit button.
Given this code from Class B：
25. A a1 = new A（）；
26. A a2 = new A（）；
27. A a3 = new A（）；
28. System.out.println（A.getInstanceCount（））；
What is the result？（）

A. Compilation of class A fails.
B. Line 28 prints the value 3 to System.out.
C. Line 28 prints the value 1 to System.out.
D. Compilation fails because of an error on line 28.
E. A runtime error occurs when line 25 executes.

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4.多项选择题 Which two code fragments correctly create and initialize a static array of int elements？（）

A.A
B.B
C.C
D.D

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5.多项选择题 Given：
10. class One {
11. void foo（） { }
12. }
13. class Two extends One {
14. //insert method here
15. }
Which three methods， inserted individually at line 14， will correctly complete class Two？（）

A. public void foo（） { /* more code here */ }
B. private void foo（） { /* more code here */ }
C. protected void foo（） { /* more code here */ }
D. int foo（） { /* more code here */ }
E. void foo（） { /* more code here */ }

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