What is the default load factor by the default in the HashMap:
Anonymous Quiz
11%
100
6%
0.80
62%
0.75
7%
0.25
14%
Answer
How to destroy the object?
Anonymous Quiz
20%
Invoke the method finalize()
13%
Invoke the method destroy()
27%
Assign a value of null for all references
36%
It can't be done manually
4%
Answer
What is under the hood of the StringBuilder?
Anonymous Quiz
48%
An array of chars
20%
An array of bytes
27%
An array of strings
5%
Answer
Is the inner static class has access only to static methods and variables of the outer class?
Anonymous Quiz
60%
Right
37%
Wrong
3%
Answer
Is under the hood of the String located a final array of bytes?
Anonymous Quiz
75%
final
17%
not final
7%
Answer
Is List an abstract class?
Anonymous Quiz
20%
Right, List is an abstract class
68%
Wrong, List is an interface
9%
Both variants are wrong
3%
Answer
What is a subclass of the class RuntimeException?
Anonymous Quiz
27%
Exception
22%
IOException
7%
FileNotFoundException
41%
NullPointerException
4%
Answer
Can we catch the OutOfMemoryError by using the block try-catch?
Anonymous Quiz
37%
Yes
59%
No
3%
Answer
Time to use your knowledge, official channel with tasks from the IT army of Ukraine. Let's stop the war! 🇺🇦
https://t.me/itarmyofukraine2022
https://t.me/itarmyofukraine2022
Telegram
IT ARMY of Ukraine
Email:
armyuait@gmail.com
Чат | Chat:
https://t.me/+H6PnjkydZX0xNDky
Сайт | Website:
https://itarmy.com.ua/
armyuait@gmail.com
Чат | Chat:
https://t.me/+H6PnjkydZX0xNDky
Сайт | Website:
https://itarmy.com.ua/
Can we launch the flow through the object of type Thread again after it is finished?
Anonymous Quiz
36%
Yes
56%
No
9%
Answer
What is the result of the work next code for(;;) { }?
Anonymous Quiz
17%
Compile error
62%
Infinity cycle
7%
Runtime error
8%
There is no right answer
6%
Answer
What is the best technology field for a Java developer to learn in 2022?
Anonymous Poll
39%
Cloud computing (AWS, GCP, MA)
18%
Security
20%
BlockChain
26%
Big Data & Analytics
11%
LoT (Internet of things)
5%
Automotive
5%
Telecom
4%
Gaming
19%
DevOps
17%
Skip quiz
What is the best next programming language should Java developers learn?
Anonymous Poll
9%
C#/.NET
50%
Kotlin
24%
Javascript
19%
Python
2%
Ruby
4%
Rust
12%
Go
11%
Scala
3%
Dart
8%
Skip quiz
What happens if we call get() on an empty optional?
Anonymous Quiz
22%
Nothing
42%
NoSuchElementException
32%
NullPointerException
4%
Answer