Can an interface have static methods in Java?
Anonymous Quiz
54%
Yes, with the static keyword.
22%
No, static methods are not allowed in interfaces.
17%
Yes, with the abstract keyword.
7%
No, interfaces can only have instance methods.
👏4
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Which of the following is the return type of the lines() method in the java.nio.file.Files class?
Anonymous Quiz
33%
Stream<String>
20%
List<String>
11%
Set<String>
16%
Map<String, String>
21%
None of the above
❤6👍4👏1
What is the purpose of the 'record' keyword introduced in Java 16?
Anonymous Quiz
43%
It creates a new record in a database.
25%
It defines a new type of class for storing records.
17%
It's a replacement for the 'enum' keyword.
15%
It's used to create classes for immutable data with automatic methods.
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What is the purpose of the Optional class?
Anonymous Quiz
48%
To represent a value that may or may not be present
21%
To represent a set of values
10%
To represent a map of values
13%
To represent a function
7%
None of the above
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Which data structure uses the "Last-In-First-Out" (LIFO) principle?
Anonymous Quiz
64%
Stack
27%
Queue
5%
DeQueue
4%
DoubleLinkedList
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In which element we put javascript?
Anonymous Poll
37%
<javascript>
7%
<scripting>
52%
<script>
4%
None of these
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Which of the following statements is true about functional interfaces?
Anonymous Quiz
42%
They can have multiple abstract methods.
12%
They cannot have any methods.
35%
They can have only one abstract method.
10%
They can have only static methods.
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#java_quizs (Question - 151) . What is the name of the method used to start a thread execution?
Anonymous Quiz
25%
init();
47%
start();
22%
run();
5%
resume();
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Where does the system stores parameters and local variables whenever a method is invoked?
Anonymous Quiz
42%
Heap
45%
Stack
10%
Meta space
2%
perm gen space
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Anonymous Quiz
71%
Array
6%
Avl tree
17%
Binary tree
6%
Graphs
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Which of the following is NOT a primitive data type in Java?
Anonymous Quiz
6%
int
7%
float
22%
boolean
65%
String
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