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Q51. What is the proper way to defined a method that take two int values and returns their sum as an int value?
A. int sum(int first, int second) { first + second; }
B. int sum(int first, second) { return first + second; }
C. sum(int first, int second) { return first + second; }
D. int sum(int first, int second) { return first + second; }
E. void sum (int first, int second) { return first + second; }
Answer: D
Q52. What is the result?
A. sc: class.Object asc: class.AnotherSampleClass
B. sc: class.SampleClass asc: class.AnotherSampleClass
C. sc: class.AnotherSampleClass asc: class.SampleClass
D. sc: class.AnotherSampleClass asc: class.AnotherSampleClass
Answer: D
Q53. which three lines are illegal?
A. line 3
B. line 4
C. line 5
D. line 6
E. line 10
F. line 11
G. line 12
H. line 13
Answer: CDH
Q54. Which two statements are true?
C. An interface CANNOT be extended by another interface.
D. An interface can be extended by an abstract class.
E. An abstract class can be extended by a concrete class.
F. An abstract class CANNOT be extended by an abstract class.
Answer: AE
Q55. Which two statements are true for a two-dimensional array of primitive data type?
A. It cannot contain elements of different types.
B. The length of each dimension must be the same.
C. At the declaration time, the number of elements of the array in each dimension must be
specified.
D. All methods of the class object may be invoked on the two-dimensional array.
Answer: CD
Q56. Given:
What is the result?
A. One
B. Two
C. Three
D. Compilation fails
Answer: C
Q57. Given:
What is the result?
A. 6 5 6 4
B. 6 5 5 4
C. 6 5 6 6
D. 6 5 6 5
Answer: A
Q58. Given:
Given the for loop construct:
Which constructor initializes the variable x3?
A. Only the default constructor of class X
B. Only the no-argument constructor of class Y
C. Only the no-argument constructor of class Z
D. Only the default constructor of object class
Answer: C
Q59. Given:
What is the result?
A. hEllOjAvA!
B. Hello java!
C. Out of limits hEllOjAvA!
D. Out of limits
Answer: D
Q60. Given:
What is the result?
A. Shining Sun
Shining Sun
Shining Sun
B. Shining Sun
Twinkling Star
Shining Sun
C. Compilation fails
D. A ClassCastException is thrown at runtime
Answer: D