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Pierre
Pierre
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27 questions
1
2
Easy
20 votes
2282 runs
7 comments
Write a Java program that prints 'welovedev'.
Full stack developer
strings
variables
at Sep 19, 2022
Easy
9 votes
2213 runs
1 comment
How should a package be named in Java?
Full stack developer
packages
java
at Sep 19, 2022
Easy
8 votes
2154 runs
1 comment
How to concatenate two strings of characters in Java?
Full stack developer
strings
concatenation
at Jan 4, 2022
Easy
5 votes
2176 runs
0 comment
Are arrays primitives types in Java?
Full stack developer
arrays
primitives
at Sep 19, 2022
Easy
5 votes
2134 runs
0 comment
Add elements to an ArrayList in Java
Full stack developer
arrays
lists
java
at Jan 4, 2022
Medium
3 votes
2120 runs
1 comment
How to print an array in Java
Full stack developer
arrays
java
at Feb 6, 2024
Easy
3 votes
2079 runs
2 comments
Write a valid code comment in Java
Full stack developer
comments
java
at Jan 4, 2022
Easy
3 votes
2065 runs
0 comment
What does `--` do in Java?
Full stack developer
operators
at Jan 4, 2022
Medium
3 votes
259 runs
0 comment
Count the number of words in a string in Java
Full stack developer
hashmap
string
at Jan 4, 2022
Hard
2 votes
2209 runs
4 comments
List the annotations that can be used in a JUnit test class.
Full stack developer
junit
annotations
at Jan 4, 2022
Easy
2 votes
2109 runs
2 comments
What is “AssertEquals” used for in a Java Unit test?
Full stack developer
java
unit test
at Jan 4, 2022
Easy
2 votes
2035 runs
1 comment
How to call an interface in a java class?
Full stack developer
interfaces
java
at Jan 4, 2022
Easy
2 votes
780 runs
0 comment
Reverse a string in Java
Full stack developer
strings
java
at Jan 4, 2022
Hard
1 vote
576 runs
1 comment
Print the value of the enum Color.BLUE
Full stack developer
enum
java
at Feb 21, 2022
Easy
1 vote
271 runs
0 comment
Given a Java code, what will be displayed?
Full stack developer
arrays
lists
java
at Jan 4, 2022
Easy
1 vote
216 runs
0 comment
What is the type of B in the following code: public class A implements B
Full stack developer
interfaces
inheritance
at Jan 4, 2022
Easy
1 vote
207 runs
0 comment
What is the file extension after the Java program has been compiled?
Full stack developer
file
extension
at Jan 4, 2022
Easy
1 vote
201 runs
0 comment
Write a Java method signature to be able to compile my Java program
Full stack developer
java
main method
at Jan 4, 2022
Easy
0 vote
1780 runs
1 comment
Which of the following operators is used to allocate memory for an object?
Full stack developer
operators
memory
at Jan 4, 2022
Easy
0 vote
1299 runs
0 comment
Is a HashMap ordered?
Full stack developer
hashmap
collections
at Jan 4, 2022
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