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Post date Author Category Body Stats
21.08.2019
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?

244 answers
178 good - 66 bad
 
21.08.2019
Daniel Penninck
Co-Founder & advisor at Block0.io
Java

What is the console output ?

459 answers
208 good - 251 bad
 
21.08.2019
Daniel Penninck
Co-Founder & advisor at Block0.io
Java

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

269 answers
139 good - 130 bad
 
21.08.2019
Daniel Penninck
Co-Founder & advisor at Block0.io
Java

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

271 answers
107 good - 164 bad
 
21.08.2019
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...

400 answers
339 good - 61 bad
 
21.08.2019
Daniel Penninck
Co-Founder & advisor at Block0.io
Java

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

461 answers
255 good - 206 bad
 
21.08.2019
Daniel Penninck
Co-Founder & advisor at Block0.io
Java

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

249 answers
80 good - 169 bad
 
21.08.2019
Daniel Penninck
Co-Founder & advisor at Block0.io
Java

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

237 answers
136 good - 101 bad
 
21.08.2019
Daniel Penninck
Co-Founder & advisor at Block0.io
Java

Which assertion is true ?

473 answers
256 good - 217 bad
 
21.08.2019
Daniel Penninck
Co-Founder & advisor at Block0.io
Java

Pi = 3.14 ; is

476 answers
378 good - 98 bad
 
21.08.2019
Daniel Penninck
Co-Founder & advisor at Block0.io
Java

What is byte code in the context of Java?

246 answers
183 good - 63 bad
 
21.08.2019
Daniel Penninck
Co-Founder & advisor at Block0.io
Java

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

225 answers
46 good - 179 bad
 
21.08.2019
Daniel Penninck
Co-Founder & advisor at Block0.io
Java

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

452 answers
202 good - 250 bad
 
21.08.2019
Daniel Penninck
Co-Founder & advisor at Block0.io
Java

LinkedHashSet implements

341 answers
149 good - 192 bad
 
21.08.2019
Daniel Penninck
Co-Founder & advisor at Block0.io
Java

Vector extends which of these?

228 answers
115 good - 113 bad
 
21.08.2019
Daniel Penninck
Co-Founder & advisor at Block0.io
Java

Which is a valid declarations of a String?

249 answers
188 good - 61 bad
 
21.08.2019
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)?

386 answers
130 good - 256 bad
 
21.08.2019
Daniel Penninck
Co-Founder & advisor at Block0.io
Java

What is the output of the following code?

368 answers
212 good - 156 bad
 
21.08.2019
Daniel Penninck
Co-Founder & advisor at Block0.io
Java

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

358 answers
77 good - 281 bad
 
21.08.2019
Daniel Penninck
Co-Founder & advisor at Block0.io
Java

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

229 answers
136 good - 93 bad
 
23.09.2019
Daniel Penninck
Co-Founder & advisor at Block0.io
Java

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

361 answers
113 good - 248 bad
 
21.08.2019
Daniel Penninck
Co-Founder & advisor at Block0.io
Java

Select words that are not Java Language Keywords ?

236 answers
34 good - 202 bad
 
21.08.2019
Daniel Penninck
Co-Founder & advisor at Block0.io
Java

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

468 answers
211 good - 257 bad
 
21.08.2019
Daniel Penninck
Co-Founder & advisor at Block0.io
Java

What is the output of the following code?

402 answers
230 good - 172 bad
 
21.08.2019
Daniel Penninck
Co-Founder & advisor at Block0.io
Java

What is the output of the following code:

378 answers
192 good - 186 bad