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EL Mostafa Fadili
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48 questions
Medium
10 votes974 runs0 comment

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

Full stack developer
EL Mostafa Fadiliat Feb 13, 2024
Easy
3 votes893 runs0 comment

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

Full stack developer
EL Mostafa Fadiliat Jan 25, 2024
Easy
3 votes661 runs1 comment

Compare two strings in Java

Full stack developer
EL Mostafa Fadiliat Apr 8, 2024
Medium
2 votes133 runs1 comment

What is the output of the following Java code?

Full stack developer
EL Mostafa Fadiliat Apr 5, 2024
Easy
1 vote735 runs0 comment

What Java keyword is used to define a constant variable?

Full stack developer
EL Mostafa Fadiliat Mar 27, 2024
Medium
1 vote143 runs0 comment

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

Full stack developer
EL Mostafa Fadiliat Mar 27, 2024
Easy
1 vote22 runs0 comment

What is encapsulation in Object-Oriented Programming?

IT Architect
OOP
classes
objects
EL Mostafa Fadiliat Nov 8, 2024
Easy
1 vote10 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 vote182 runs0 comment

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
0 vote173 runs1 comment

A class can implement multiple interfaces.

Full stack developer
EL Mostafa Fadiliat Feb 13, 2024
Easy
0 vote100 runs1 comment

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

Full stack developer
EL Mostafa Fadiliat Mar 27, 2024
Easy
0 vote92 runs0 comment

How to delete a table in SQL?

Back-end developer
database
EL Mostafa Fadiliat Nov 26, 2024
Easy
0 vote55 runs0 comment

What does the HAVING clause do in an SQL query?

Back-end developer
aggregation
filtering
EL Mostafa Fadiliat Nov 13, 2024
Easy
0 vote51 runs0 comment

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

Back-end developer
aggregation
EL Mostafa Fadiliat Nov 26, 2024
Easy
0 vote51 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
0 vote49 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
Easy
0 vote45 runs0 comment

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

Back-end developer
functions
EL Mostafa Fadiliat Nov 13, 2024
Easy
0 vote38 runs0 comment

What does the LIMIT clause do in SQL?

Back-end developer
limits
EL Mostafa Fadiliat Nov 13, 2024
Easy
0 vote17 runs0 comment

What does the JOIN clause do in SQL?

Back-end developer
joins
EL Mostafa Fadiliat Nov 26, 2024
Easy
0 vote14 runs0 comment

Which SQL clause is used to remove duplicate rows from the results?

Back-end developer
distinct
EL Mostafa Fadiliat Nov 26, 2024