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Group 2@2x
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40 questions
1
2
Hard
0 vote
274 runs
0 comment
What is the keyword that allows pattern matching in an `if` in Java 17?
Back-end developer
java
pattern matching
at Jan 31, 2022
Expert
0 vote
266 runs
0 comment
Access the `x` attribute of a `Point` class in Java 17
Back-end developer
java
records
at Jan 31, 2022
Expert
0 vote
278 runs
0 comment
Compile the following Java code and explain the error.
Back-end developer
java
variables
at Jan 31, 2022
Hard
0 vote
288 runs
0 comment
Create an immutable list in Java 11
Back-end developer
list
java
at Jan 31, 2022
Medium
1 vote
279 runs
0 comment
What is the value of i after two threads execute the increment method?
Back-end developer
java
threads
at Jan 31, 2022
Expert
1 vote
327 runs
0 comment
Which methods are called on an object when it is added to a HashSet?
Back-end developer
hashset
hashcode
equals
at Jan 31, 2022
Hard
4 votes
283 runs
1 comment
The Garbage Collector G1(or Garbage First) is a GC that organizes the heap in a way
Back-end developer
garbage collection
java
at Jan 31, 2022
Medium
2 votes
288 runs
0 comment
Compile the following method: public void doSomething() { String s1 = "s1"; var s2 = "s2"; val s3 = "s3"; s3 = "s4"; }
Back-end developer
java
val
at Mar 20, 2023
Expert
2 votes
253 runs
0 comment
Print a record in Java 17
Back-end developer
java
records
at Jan 31, 2022
Loïc
Loïc
Hard
1 vote
259 runs
1 comment
How to print a multiline string in Java 17
Back-end developer
strings
java
at Mar 30, 2023
Hard
0 vote
339 runs
0 comment
In the **java.util.HashSet** class, if we add an element already present in the set, the add method returns false.
Back-end developer
java
hashset
at Jan 31, 2022
Hard
0 vote
310 runs
1 comment
Return a value in a switch expression in Java 17
Back-end developer
switch
java
at Jan 31, 2022
Medium
0 vote
296 runs
0 comment
Which implementations of **java.util.Map** guarantees the same reading order as the insertion order?
Back-end developer
java
map
at Jan 31, 2022
Expert
0 vote
277 runs
0 comment
In the following method, the monitor used to set the lock that guarantees synchronization is
Back-end developer
synchronization
monitor
at Jan 31, 2022
Loïc
Loïc
Loïc
Loïc
Loïc
Medium
0 vote
276 runs
0 comment
What is AppCDS in Java 17?
Back-end developer
java
class
at Jan 31, 2022
Hard
0 vote
273 runs
0 comment
What is the default garbage collector in Java 11?
Back-end developer
garbage collection
java
at Jan 31, 2022
Loïc
Loïc
Medium
1 vote
27 runs
0 comment
Which library is at the heart of the Quarkus HTTP stack?
IT Architect
quarkus
netty
at Nov 3, 2023
Medium
1 vote
47 runs
0 comment
What is the **smart dispatch** implemented by the Quarkus reactive HTTP client and server :
IT Architect
quarkus
http
io
at Nov 3, 2023
Medium
1 vote
30 runs
0 comment
List the default configuration profiles in Quarkus
IT Architect
configuration
profiles
at Nov 3, 2023
Loïc
Loïc
Loïc
Loïc
Loïc
Medium
0 vote
263 runs
0 comment
Check if two Integers are equal in Java
Back-end developer
java
integer
equals
at Jan 31, 2022
Loïc
Loïc
Loïc
Loïc
Loïc
Loïc
