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Q11. Given:
What is the result?
A. true:true
B. true:false
C. false:true
D. false:false
Answer: C
Q12. 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
Q13. Given:
What is the result?
A. hEllOjAvA!
B. Hello java!
C. Out of limits hEllOjAvA!
D. Out of limits
Answer: C
Q14. Given the code fragment:
What is the result?
A. 2 4
B. 0 2 4 6
C. 0 2 4
D. Compilation fails
Answer: C
Q15. Given the code fragment:
What is the result?
A. A B C
B. A B C D E
C. A B D E
D. Compilation fails.
Answer: C
Q16. Given the code fragment:
What could expression1 and expression2 be, respectively, in order to produce output –8, 16?
A. + +a, - -b
B. + +a, b- -
C. A+ +, - - b
D. A + +, b - -
Answer: D
Q17. Given:
What is result?
A. Successful
B. Unsuccessful
C. Compilation fails
D. An exception is thrown at runtime
Answer: C
Q18. Given the code fragment:
What is the result?
A. 28false29 true
B. 285 < 429 true
C. true true
D. compilation fails
Answer: C
Q19. Given:
class Base {
// insert code here
}
public class Derived extends Base{
public static void main(String[] args) {
Derived obj = new Derived();
obj.setNum(3);
System.out.println("Square = " + obj.getNum() * obj.getNum());
}
}
Which two options, when inserted independently inside class Base, ensure that the class is being properly encapsulated and allow the program to execute and print the square of the number?
A. private int num; public int getNum() { return num; }public void setNum(int num) { this.num = num;}
B. public int num; protected public int getNum() { return num; }protected public void setNum(int num) { this.num = num;}
C. private int num;public int getNum() {return num;} private void setNum(int num) { this.num = num;}
D. protected int num; public int getNum() { return num; } public void setNum(int num) { this.num = num;}
E. protected int num; private int getNum() { return num; } public void setNum(int num) { this.num = num;}
Answer: A,D
Explanation:
Incorrect:
Not B: illegal combination of modifiers: protected and public
not C: setNum method cannot be private.
not E: getNum method cannot be private.
Q20. Given:
What is the result?
A. Good Day! Good Luck!
B. Good Day! Good Day!
C. Good Luck! Good Day!
D. Good Luck! Good Luck!
E. Compilation fails
Answer: E
