Q11. Given the code fragment
Which code fragments, inserted independently, enable the code compile?
A. t.fvar = 200;
B. cvar = 400;
C. fvar = 200; cvar = 400;
D. this.fvar = 200; this.cvar = 400;
E. t.fvar = 200; Test2.cvar = 400;
F. this.fvar = 200; Test2.cvar = 400;
Answer: B
Q12. Given:
What is the result?
A. Null
B. Compilation fails
C. An exception is thrown at runtime
D. 0
Answer: C
Q13. Given the code fragment from three files:
Which code fragment, when inserted at line 2, enables the code to compile?
A. Option A
B. Option B
C. Option C
D. Option D
E. Option E
Answer: E
Q14. Given the code fragment:
Which modification enables the code to print 54321?
A. Replace line 6 with System, out. print (--x) ;
B. At line 7, insert x --;
C. Replace line 6 with --x; and, at line 7, insert system, out. print (x);
D. Replace line 12 With return (x > 0) ? false: true;
Answer: B
Q15. Given the code fragment:
Which code fragment, when inserted at line 9, enables the code to print true?
A. String str2 = str1;
B. String str2 = new String (str1);
C. String str2 = sb1. toString ();
D. String str2 = "Duke";
Answer: A
Q16. Given:
What is the result?
A. 100 210
B. Compilation fails due to an error in line n1
C. Compilation fails due to an error at line n2
D. Compilation fails due to an error at line n3
Answer: C
Q17. Given the code fragment
int var1 = -5;
int var2 = var1--;
int var3 = 0;
if (var2 < 0) {
var3 = var2++;
} else {
var3 = --var2;
}
System.out.println(var3);
What is the result?
A. – 6
B. – 4
C. – 5
D. 5
E. 4
F. Compilation fails
Answer: C
Q18. Given:
What is the output?
A. 2015-03-27
B. 2015-04-27
C. 2015-02-27 D. Compilation fails due to error at line 6.
E. Compilation fails due to error at line 8.
Answer: A
Explanation:
To create we have used following method with LocalDate class;
public static LocalDate of(intyear, int month, int dayOfMonth)
Here we need to remember that month is not zero based so if you pass 1 for month, then
month will be January.
Then we have used period object of 1 day and add to date object which makes current date
to next day, so final output is 2015-03-27. Hence option A is correct.
https://docs.oracle.com/javase/tutorial/datetime/iso/datetime.html
Q19. Given:
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
Q20. Given the code fragment:
What is the result?
A. 1:2:3:4:5:
B. 1:2:3:
C. Compilation fails.
D. An ArrayoutofBoundsException is thrown at runtime.
Answer: A