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NEW QUESTION 1
Given the code fragment:
And given the requirements:
Which two code fragments can be independently placed at line n1 to meet the requirements?
- A. Option A
- B. Option B
- C. Option C
- D. Option D
- E. Option E
Answer: AC
NEW QUESTION 2
Which three statements are true about the structure of a Java class?
- A. A public class must have a main method.
- B. A class can have only one private constructor.
- C. A method can have the same name as a field.
- D. A class can have overloaded static methods.
- E. The methods are mandatory components of a class.
- F. The fields need not be initialized before use.
Answer: BCF
NEW QUESTION 3
Which two statements are true?
- A. Error class is unextendable.
- B. Error class is extendable.
- C. Error is a RuntimeException.
- D. Error is an Exception.
- E. Error is a Throwable.
Answer: BC
NEW QUESTION 4
You are asked to develop a program for a shopping application, and you are given the following information: Which definition of the Toy class adds a valid layer of abstraction to the class hierarchy?
- A. Option A
- B. Option B
- C. Option C
- D. Option D
Answer: A
NEW QUESTION 5
Given the code fragment:
Which code fragment, when inserted at line 3, enables the code to print 10:20?
- A. int[] array n= new int[2];
- B. int[] array;array = int[2];
- C. int array = new int[2];
- D. int array [2] ;
Answer: C
NEW QUESTION 6
Given:
And given the code fragment:
What is the result?
- A. 4W 100 Auto4W 150 Manual
- B. Null 0 Auto4W 150 Manual
- C. Compilation fails only at line n1
- D. Compilation fails only at line n2
- E. Compilation fails at both line n1 and line n2
Answer: C
NEW QUESTION 7
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
NEW QUESTION 8
Given the code fragment:
What is the result?
- A. An exception is thrown at runtime.
- B. -1
- C. 5
Answer: A
NEW QUESTION 9
Given:
And given the commands: javac Test.java
java Test
What is the result?
- A. Java SE
- B. Java EE
- C. Compilation fails at line n1.
- D. A NullPointerException is thrown at runtime.
Answer: B
NEW QUESTION 10
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: Explanation
Using the private modifier is the main way that an object encapsulates itself and hide data from the outside world.
NEW QUESTION 11
The following grid shows the state of a 2D array:
This grid is created with the following code:
Which line of code, when inserted in place of //line n1, adds an X into the grid so that the grid contains three consecutive X’s?
- A. grid[1][3] = ‘X’;
- B. grid[3][1] = ‘X’;
- C. grid[0][2] = ‘X’;
- D. grid[2][0] = ‘X’;
- E. grid[1][2] = ‘X’;
Answer: C
NEW QUESTION 12
Given the code fragment:
Which three code fragments are valid at line n1?
- A. public static void insertToy() {/* code goes here */}
- B. public abstract Toy getToy() {return new Toy();}
- C. public void printToy();
- D. public int calculatePrice() {return price;}
- E. public abstract int computeDiscount();
Answer: CDE
NEW QUESTION 13
Given:
What is the result?
- A. Hello Log 1:0
- B. Hello Log 2:1
- C. Welcome Log 2:1
- D. Welcome Log 1:0
Answer: C
NEW QUESTION 14
You are asked to create a method that accepts an array of integers and returns the highest value from that array.
Given the code fragment:
Which method signature do you use at line n1?
- A. public int findMax (int [] numbers)
- B. static int[] findMax (int max)
- C. static int findMax (int [] numbers)
- D. final int findMax (int [] )
Answer: A
NEW QUESTION 15
Given the following class declarations: Which answer fails to compile?
- A. Option A
- B. Option B
- C. Option C
- D. Option D
- E. Option E
Answer: E
NEW QUESTION 16
Given the following code:
What is the output?
- A. 44
- B. 35
- C. 47
- D. 54
- E. 45
- F. 421
Answer: E
NEW QUESTION 17
Given:
And given the code fragment: Book book1 = new EBook (); Book1.readBook();
Which option enables the code to compile?
- A. Option A
- B. Option B
- C. Option C
- D. Option D
Answer: A
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