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Post date Author Category Question Stats
26.03.2018
Daniel Penninck
Co-Founder & advisor at Block0.io
Java

Which of the following statements about polymorphism are true? (Choose all that apply)

317 answers
95 good - 222 bad
 
26.03.2018
Daniel Penninck
Co-Founder & advisor at Block0.io
Java

PermGen space has been replaced with which of these in Java 8

252 answers
128 good - 124 bad
 
26.03.2018
Daniel Penninck
Co-Founder & advisor at Block0.io
Java

Which is a valid declarations of a String?

212 answers
159 good - 53 bad
 
26.03.2018
Daniel Penninck
Co-Founder & advisor at Block0.io
Java

Assuming that the code bellow compile. What will be the console output ?

382 answers
169 good - 213 bad
 
26.03.2018
Daniel Penninck
Co-Founder & advisor at Block0.io
Java

Assuming that the code bellow compile. What will be the console output ?

203 answers
122 good - 81 bad
 
26.03.2018
Daniel Penninck
Co-Founder & advisor at Block0.io
Java

What does Collections.sort internally uses when number of elements are greater than 7?

250 answers
102 good - 148 bad
 
26.03.2018
Daniel Penninck
Co-Founder & advisor at Block0.io
Java

Assuming that the code bellow compile. What will be the console output ?

219 answers
66 good - 153 bad
 
26.03.2018
Daniel Penninck
Co-Founder & advisor at Block0.io
Java

Assuming that the code bellow compile. What will be the console output ?

391 answers
173 good - 218 bad
 
26.03.2018
Daniel Penninck
Co-Founder & advisor at Block0.io
Java

What is the output of the following code?

343 answers
196 good - 147 bad
 
26.03.2018
Daniel Penninck
Co-Founder & advisor at Block0.io
Java

Which of the following for loops will be an infinite loop (with i as an int)?

335 answers
109 good - 226 bad
 
26.03.2018
Daniel Penninck
Co-Founder & advisor at Block0.io
Java

Select words that are not Java Language Keywords ?

197 answers
27 good - 170 bad
 
26.03.2018
Daniel Penninck
Co-Founder & advisor at Block0.io
Java

Vector extends which of these?

197 answers
95 good - 102 bad
 
26.03.2018
Daniel Penninck
Co-Founder & advisor at Block0.io
Java

Which of the following are not checked exceptions? (Choose all that apply)

204 answers
39 good - 165 bad
 
26.03.2018
Daniel Penninck
Co-Founder & advisor at Block0.io
Java

What is the output of the following code?

316 answers
179 good - 137 bad
 
26.03.2018
Daniel Penninck
Co-Founder & advisor at Block0.io
Java

LinkedHashSet implements

298 answers
132 good - 166 bad
 
26.03.2018
Daniel Penninck
Co-Founder & advisor at Block0.io
Java

Pi = 3.14 ; is

407 answers
321 good - 86 bad
 
26.03.2018
Daniel Penninck
Co-Founder & advisor at Block0.io
Java

What is the result of the following code? (Choose all that apply) ?

209 answers
116 good - 93 bad
 
26.03.2018
Daniel Penninck
Co-Founder & advisor at Block0.io
Java

Which of these methods can be used to obtain set of all keys in a map?

214 answers
154 good - 60 bad
 
26.03.2018
Daniel Penninck
Co-Founder & advisor at Block0.io
Java

Which assertion is true ?

422 answers
232 good - 190 bad
 
26.03.2018
Daniel Penninck
Co-Founder & advisor at Block0.io
Java

Which of these methods of class String is used to compare two String objects for their equality...

346 answers
292 good - 54 bad
 
26.03.2018
Daniel Penninck
Co-Founder & advisor at Block0.io
Java

What is the output of the following code:

331 answers
170 good - 161 bad
 
26.03.2018
Daniel Penninck
Co-Founder & advisor at Block0.io
Java

What is the console output ?

392 answers
182 good - 210 bad
 
26.03.2018
Daniel Penninck
Co-Founder & advisor at Block0.io
Java

What is byte code in the context of Java?

213 answers
159 good - 54 bad
 
26.03.2018
Daniel Penninck
Co-Founder & advisor at Block0.io
Java

Which of the following lines can be inserted at line 11 to print true?

304 answers
64 good - 240 bad
 
26.03.2018
Daniel Penninck
Co-Founder & advisor at Block0.io
Java

Assuming that the code bellow compile. What will be the console output ?

401 answers
219 good - 182 bad