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2021 Apr 1z0-808 exam answers
Q121. Which of the following can fill in the blank in this code to make it compile?
A. abstract
B. public
C. default
D. It will not compile with any as interfaces cannot have non abstract methods.
E. It will compile without filling the blank.
Answer: C
Explanation:
From Java SE 8, we can use static and/or default methods in interfaces, but they should be non abstract methods. SO in this case using default in blank is completely legal. Hence option C is correct. Option A is incorrect as given method is not abstract, so can't use abstract there. Options B and E are incorrect as we can't have non abstract method interface if they are not default or static. https;//docs.oraclexom/javase/tutorial/java/Iandl/defaultmethods.html
Q122. Consider
Integer number = Integer.valueOff 808.1");
Which is true about the above statement?
A. The value of the variable number will be 808.1
B. The value of the variable number will be 808
C. The value of the variable number will be 0.
D. A NumberFormatException will be throw.
E. It will not compile.
Answer: D
Explanation:
The Integer class value of 0 returns an Integer from given string. But we need to pass string which has correct format for integer otherwise it will throw a NumberFormatException. In this case we have passed string which is not an integer value (since what we passed is fractional number), so option D is correct.
Q123. Given:
What is the result?
A. 2 4 6 8
B. 2 4 6 8 9
C. 1 3 5 7
D. 1 3 5 7 9
Answer: D
Q124. Given the code fragment:
Which code fragment prints red: blue: small: medium?
A. Option A
B. Option B
C. Option C
D. Option D
Answer: D
Q125. 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
Improved 1z0-808 practice:
Q126. Given the code fragment:
What is the result?
A. Match 1
B. Match 2
C. No Match
D. A NullPointerException is thrown at runtime.
Answer: B
Explanation:
it will compare the string contents of the StringBuilder with string object.
Q127. 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
Q128. Given:
What is the result?
A. Option A
B. Option B
C. Option C
D. Option D
Answer: C
Q129. 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
Q130. Given the code fragment:
Assume that the system date is June 20, 2014. What is the result?
A. Option A
B. Option B
C. Option C
D. Option D
Answer: A