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QUESTION 41
Given the following code for the classes MyException and Test:
What is the result?
A. A
B. B
C. Either A or B
D. A B
E. A compile time error occurs at line n1
Answer: B
Explanation:
“catch (RuntimeException re)” always catches a RuntimeException.
QUESTION 42
Given:
What is the result?
A. myStr: 9009, myNum: 9009
B. myStr: 7007, myNum: 7007
C. myStr: 7007, myNum: 9009
D. Compilation fails
Answer: C
QUESTION 43
Which two are benefits of polymorphism?
A. Faster code at runtime
B. More efficient code at runtime
C. More dynamic code at runtime
D. More flexible and reusable code
E. Code that is protected from extension by other classes
Answer: BD
Explanation:
https://www.cs.princeton.edu/courses/archive/fall98/cs441/mainus/node5.html
QUESTION 44
Given the code fragment:
What is the result?
A. 1:2:3:4:5:
B. 1:2:3:
C. Compilation fails
D. An ArrayoutofBoundsException is thrown at runtime
Answer: A
QUESTION 45
Given:
What is the result?
A. true:true
B. true:false
C. false:true
D. false:false
Answer: C
QUESTION 46
Given the following classes:
Which two options fail to compile when placed at line n1 of the main method?
A. employee.salary = 50_000;
B. director.salary = 80_000;
C. employee.budget = 200_000;
D. manager.budget = 1_000_000;
E. manager.stockOption = 500;
F. director.stockOptions = 1_000;
Answer: CE
Explanation:
C. budget is not a member of class employee.
E. stockOptions is not a member of class manager.
QUESTION 47
Given:
What is the result?
A. 200.0 : 100.0
B. 400.0 : 200.0
C. 400.0 : 100.0
D. Compilation fails.
Answer: C
Explanation:
After call to updatePrice prt.price change its value to 400 (prt is passed by reference) variable newPrice never changes its value from 100 (newPrice is passed by value)
QUESTION 48
Given the code fragment:
What is the result if the integer aVar is 9?
A. Hello World!
B. Hello Universe!
C. Hello World
D. Compilation fails.
Answer: A
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