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NEW QUESTION NO: 20
What is the name of the Java concept that uses access modifiers to protect variables and hide them within a class?
A. Encapsulation
B. Inheritance
C. Abstraction
D. Instantiation
E. Polymorphism
Answer: A
Explanation/Reference:
Explanation:
Using the private modifier is the main way that an object encapsulates itself and hide data from the outside world.
Reference: http://www.tutorialspoint.com/java/java_access_modifiers.htm
NEW QUESTION NO: 21
Given the code fragment:
Which code fragment, when inserted at line 3, enables the code to print 10:20?
A. int array = new int[2];
B. int array [2] ;
C. int[] array;
array = int[2];
D. int[] array n= new int[2];
Answer: C
NEW QUESTION NO: 22
Given:
What is the result?
A. Area is 6.0
B. Area is 3.0
C. Compilation fails at line n1
D. Compilation fails at line n2.
Answer: D
NEW QUESTION NO: 23
Given the code fragment:
Which option can replace xxx to enable the code to print 135?
A. int e = 1; e < = 5; e + = 1
B. int e = 1; e < 5; e+ =2
C. int e = 0; e < 5; e + = 2
D. int e = 0; e < = 4; e++
Answer: C
NEW QUESTION NO: 24
Given the following code for a Planet object:
What is the output?
A. Option B
B. Option D
C. Option C
D. Option E
E. Option A
Answer: C
NEW QUESTION NO: 25
Given the code fragment:
Which code fragment, when inserted at line 9, enables the code to print true?
A. String str2 = "Duke";
B. String str2 = sb1. toString ();
C. String str2 = new String (str1);
D. String str2 = str1;
Answer: C
NEW QUESTION NO: 26
Given the code fragment:
What is the result?
A. Jesse 25
Walter 52
B. Compilation fails only at line n2
C. Compilation fails only at line n1
D. Compilation fails at both line n1 and line n2
Answer: C
NEW QUESTION NO: 27
Given the code fragment:
Which code fragment, when inserted at line n1, enables the App class to print Equal?
A. Option A
B. Option B
C. Option D
D. Option C
Answer: B
NEW QUESTION NO: 28
Given:
What is the result?
A. Option C
B. Option B
C. Option A
D. Option D
Answer: B
NEW QUESTION NO: 29
Given the following code:
What are the values of each element in intArr after this code has executed?
A. 15, 4, 45, 60, 90
B. 15, 30, 90, 60, 90
C. 15, 60, 45, 90, 75
D. 15, 90, 45, 90, 75
E. 15, 30, 75, 60, 90
Answer: E
NEW QUESTION NO: 30
Given:
What is the result?
A. A B C C
B. A B D
C. A C D
D. A B D C
E. A B C D
Answer: D