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EL Mostafa Fadili
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48 questions
Easy
15 votes2038 runs
1 comment

What is the difference between an interface and an abstract class in Java?

Full stack developer
EL Mostafa Fadiliat Feb 13, 2024
Easy
7 votes1544 runs
3 comments

Compare two strings in Java

Full stack developer
EL Mostafa Fadiliat Apr 8, 2024
Easy
6 votes1683 runs0 comment

What Java keyword is used to define a constant variable?

Full stack developer
EL Mostafa Fadiliat Mar 27, 2024
Easy
5 votes1827 runs
1 comment

Print the result of the division of 5 by 2 in Java

Full stack developer
EL Mostafa Fadiliat Jan 25, 2024
Easy
2 votes445 runs0 comment

What is the SQL function to find the maximum value in a column?

Back-end developer
functions
EL Mostafa Fadiliat Nov 26, 2024
Medium
2 votes267 runs1 comment

What is the output of the following Java code?

Full stack developer
EL Mostafa Fadiliat Apr 5, 2024
Easy
2 votes234 runs0 comment

What does the principle of "least privilege" refer to in cybersecurity?

Security Expert
Computer security
security
principle
EL Mostafa Fadiliat Dec 26, 2024
Easy
1 vote1486 runs
3 comments

What SQL operator is used to test for a range of values in a column?

Back-end developer
operators
EL Mostafa Fadiliat Nov 13, 2024
Easy
1 vote1357 runs0 comment

How to delete a table in SQL?

Back-end developer
database
EL Mostafa Fadiliat Nov 26, 2024
Easy
1 vote451 runs0 comment

What SQL keyword is used to sort the results of a query?

Back-end developer
sorting
EL Mostafa Fadiliat Nov 25, 2024
Easy
1 vote380 runs1 comment

What does the HAVING clause do in an SQL query?

Back-end developer
aggregation
filtering
EL Mostafa Fadiliat Nov 13, 2024
Easy
1 vote289 runs0 comment

What function returns the number of rows in an SQL table?

Back-end developer
functions
EL Mostafa Fadiliat Nov 13, 2024
Easy
1 vote277 runs0 comment

What is the purpose of the "super" keyword in Java?

Full stack developer
EL Mostafa Fadiliat Mar 27, 2024
Easy
1 vote235 runs0 comment

What is encapsulation in Object-Oriented Programming?

IT Architect
OOP
classes
objects
EL Mostafa Fadiliat Nov 8, 2024
Easy
1 vote185 runs1 comment

Write a Java program to calculate the sum of first 5 numbers

Full stack developer
EL Mostafa Fadiliat Mar 27, 2024
Easy
1 vote77 runs1 comment

What is the visibility of a protected member in OOP?

IT Architect
OOP
classes
access modifiers
EL Mostafa Fadiliat Nov 8, 2024
Easy
1 vote62 runs0 comment

What is the purpose of the @Entity annotation in Hibernate?

Back-end developer
annotations
mapping
EL Mostafa Fadiliat Nov 8, 2024
Easy
1 vote31 runs0 comment

Which annotation is used to mark a Spring Boot application class?

Back-end developer
annotations
EL Mostafa Fadiliat Sep 30, 2024
Easy
0 vote419 runs0 comment

What does the GROUP BY clause do in an SQL query?

Back-end developer
aggregation
EL Mostafa Fadiliat Nov 26, 2024
Medium
0 vote400 runs0 comment

What is the default grid system in Bootstrap 5 based on?

Web developer
flexbox
EL Mostafa Fadiliat Dec 26, 2024