How does increasing the number of selected columns in the SELECT * operator affect query execution speed?
Junior — Middle
204
Java
14621
265
What is the difference between the SELECT * query and an explicit enumerative SELECT in SQL?
Junior — Middle
201
How are the equals and hashCode methods related in Java, and why is it important to implement them correctly together?
Junior — Middle
198
What is the main role and tasks of Spring in Java application development?
Junior — Middle
193
How does using ORM like JPA differ from direct SQL queries when working with a database?
Junior — Middle
188
Share your experience of writing automated and manual tests in projects.
Junior — Middle
179
Describe the main steps to create a simple application using Spring Boot.
Junior — Middle
168
Describe the most difficult task you faced and how you solved it.
Junior — Middle
165
155
Can you explain what Spring is and what it is used for in Java development?
Junior — Middle
153
Can you explain how the HashMap data structure works and how it provides fast access to elements?
144