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Pierre
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27 questions
Easy
27 votes2689 runs
11 comments

Write a Java program that prints 'welovedev'.

Full stack developer
strings
variables
Pierreat Sep 19, 2022
Easy
12 votes2601 runs
2 comments

How should a package be named in Java?

Full stack developer
packages
java
Pierreat Sep 19, 2022
Easy
10 votes2514 runs
2 comments

How to concatenate two strings of characters in Java?

Full stack developer
strings
concatenation
Pierreat Jan 4, 2022
Easy
8 votes2517 runs0 comment

Add elements to an ArrayList in Java

Full stack developer
arrays
lists
java
Pierreat Jan 4, 2022
Easy
7 votes2558 runs0 comment

Are arrays primitives types in Java?

Full stack developer
arrays
primitives
Pierreat Sep 19, 2022
Easy
5 votes2438 runs
3 comments

Write a valid code comment in Java

Full stack developer
comments
java
Pierreat Jan 4, 2022
Easy
5 votes2410 runs0 comment

What does `--` do in Java?

Full stack developer
operators
Pierreat Jan 4, 2022
Medium
5 votes2408 runs
3 comments

How to print an array in Java

Full stack developer
arrays
java
Pierreat Feb 6, 2024
Easy
4 votes2478 runs
3 comments

What is “AssertEquals” used for in a Java Unit test?

Full stack developer
java
unit test
Pierreat Jan 4, 2022
Hard
3 votes2622 runs5 comments

List the annotations that can be used in a JUnit test class.

Full stack developer
junit
annotations
Pierreat Jan 4, 2022
Easy
3 votes2373 runs
2 comments

How to call an interface in a java class?

Full stack developer
interfaces
java
Pierreat Jan 4, 2022
Medium
3 votes323 runs0 comment

Count the number of words in a string in Java

Full stack developer
hashmap
string
Pierreat Jan 4, 2022
Easy
2 votes922 runs0 comment

Reverse a string in Java

Full stack developer
strings
java
Pierreat Jan 4, 2022
Medium
1 vote653 runs1 comment

Print the value of the enum Color.BLUE

Full stack developer
enum
java
Pierreat Feb 21, 2022
Easy
1 vote334 runs0 comment

Given a Java code, what will be displayed?

Full stack developer
arrays
lists
java
Pierreat Jan 4, 2022
Easy
1 vote267 runs
1 comment

What is the type of B in the following code: public class A implements B

Full stack developer
interfaces
inheritance
Pierreat Jan 4, 2022
Easy
1 vote259 runs0 comment

What is the file extension after the Java program has been compiled?

Full stack developer
file
extension
Pierreat Jan 4, 2022
Easy
1 vote246 runs0 comment

Write a Java method signature to be able to compile my Java program

Full stack developer
java
main method
Pierreat Jan 4, 2022
Easy
0 vote1943 runs
2 comments

Which of the following operators is used to allocate memory for an object?

Full stack developer
operators
memory
Pierreat Jan 4, 2022
Easy
0 vote1462 runs0 comment

Is a HashMap ordered?

Full stack developer
hashmap
collections
Pierreat Jan 4, 2022