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Question 1
Which statement is true about primitive variables?
- A: They can be compared with the == operator.
- B: They can be compared with the equals method only.
- C: They cannot be compared.
- D: They can be compared with the compareTo method only.
Question 2
Given the code fragment:
Which code fragment, when inserted at line n1, enables the code to print Java Programming:1?
- A: System.out.println(name + “:” + count);
- B: System.out.println(c.name + “:” + count);
- C: System.out.println(c.name + “:” + Course.count);
- D: System.out.println(Course.name + “:” + c.count);
Question 3
Given:
Why does the compilation fail?
- A: The option variable is not initialized.
- B: The order of case labels is incorrect.
- C: The option data type is incorrect.
- D: The break statement is missing.
Question 4
Given:
What is the result?
- A: [null:-]
- B: [ : ]
- C: [null:null]
- D: [:null]
Question 5
Which two Java reserved words are used to implement encapsulation?
- A: final
- B: static
- C: public
- D: extends
- E: private
Question 6
Given the code fragment:
Which code fragment can be inserted at line n1 to enable the code to print 0.0?
- A: Ball b = null; b.weight = 0.0;
- B: Ball.weight = 0.0;
- C: Ball b = new Ball(0.0);
- D: Ball b = new Ball();
Question 7
Which two statements are true about the Java Runtime Environment (JRE)?
- A: It is responsible for garbage collection.
- B: It interprets bytecode stored in a .class file.
- C: It contains the JDK and Java APIs.
- D: It is platform independent.
- E: You must install the JRE to compile a .java file.
Question 8
Identify two features of Java.
- A: architecture dependent
- B: platform independent
- C: single threaded
- D: robust
Question 9
Given:
What is the result?
- A: 300
- B: 100
- C: 200
- D: A compilation error occurs.
Question 10
Given the code fragment:
What is the result?
- A: A compilation error occurs.
- B: A runtime exception is thrown.
- C: Julia - Peter
- D: Peter - Julia
Question 11
Given the code fragment:
What is the result?
- A: 9 12
- B: 10 10
- C: 9 9
- D: 10 14
Question 12
Given the code fragment:
What is the result?
- A: 2
- B: 4
- C: The program executes an infinite number of times.
- D: 3
Question 13
Given the code fragment:
What is the result?
- A: Unknown issues. Invalid divisor.
- B: Unknown issues.
- C: Invalid divisor.
- D: A compilation error occurs.
Question 14
Given the code fragment:
What is the result?
- A: 3
- B: A compilation error occurs.
- C: 2
- D: 0
Question 15
Given the code fragment:
What is the result?
- A: Selected null flavor.
- B: Selected Chocolate flavor.
- C: An ArrayIndexOutofBoundsException is thrown at run time.
- D: Selected Chocolate flavor. Thank you!
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