Java задачи • Mentor
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Is the finally block always executed?
☝️ Explanation:
The final block is always executed unless there is an abnormal termination of the program, either as a result of a JVM failure or calling the System.exit(0)
Is the finally block always executed?
Anonymous Quiz
65% - Yes
33% - No
2% - Answer
Which operator calculates the remainder of division?
Anonymous Quiz
3% - $
4% - **
84% - %
4% - ^
5% - Answer
What is the arrayList.get(0)?
Anonymous Quiz
29% - Autoboxing
53% - Unboxing
18% - Answer
What is the arrayList.add(11)?
Anonymous Quiz
83% - Autoboxing
10% - Unboxing
8% - Answer
What does the method offer() to do? Queue interface.
Anonymous Quiz
36% - Carry the element to the end of the queue
16% - Take the element and delete it
34% - Just take the element
13% - Answer
What types of blocks don't exist in Java?
Anonymous Quiz
10% - Static initialization block
7% - Initialization block
33% - Local block
39% - All options above are valid
11% - Answer
Does stream work with primitives?
Anonymous Quiz
43% - Yes
57% - No
Can we have two public classes in the package?
Anonymous Quiz
79% - Yes
21% - No
What happens if we call get() on an empty optional?
Anonymous Quiz
40% - NullPointerException
34% - NoSuchElementException will be thrown
21% - Nothing
5% - Answer
How does describe the relations between the class Animal and Tiger?
Anonymous Quiz
29% - Has a
64% - Is a
7% - Answer
How does describe the relations between the class Animal and Tiger?
What cannot be used with the synchronized keyword?
Anonymous Quiz
11% - method instance
21% - method static
12% - block
43% - constructor
13% - Answer
What is the initial default capacity of the class HashTable?
Anonymous Quiz
17% - 11
76% - 16
7% - Answer
Can the parameter be final in the method?
Anonymous Quiz
73% - Yes
24% - No
3% - Answer
What happens if we call get() on an empty optional?
Anonymous Quiz
22% - Nothing
41% - NoSuchElementException
32% - NullPointerException
5% - Answer
Can an abstract method be final?
Anonymous Quiz
23% - Yes
74% - No
3% - Answer
What is the best next programming language should Java developers learn?
Anonymous Poll
9% - C#/.NET
51% - Kotlin
24% - Javascript
19% - Python
2% - Ruby
4% - Rust
12% - Go
11% - Scala
3% - Dart
8% - Skip quiz
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
25% - Big Data & Analytics
11% - LoT (Internet of things)
5% - Automotive
5% - Telecom
5% - Gaming
19% - DevOps
17% - Skip quiz
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
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