JAVA
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How to System Design Trade Position Aggregator? [Solution]
import org.junit.Ignore; import java.util.Iterator; import java.util.List; import java.util.ArrayList; import org.junit.Test; import static org.junit.Assert.; public class PositionManagerTest { public PositionManagerTest() {…
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With jOOQ – Java, SQL and jOOQ.
jOOQ is mainly known for its powerful type safe, embedded, dynamic SQL capabilities that are made available through code generation.…
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Top 5 Java Design Pattern Courses for Experienced Java Developers in 2024
Hello guys, today, we’ll talk about design patterns and some of the best online courses to learn design patterns in…
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How to Integration Test Stored Procedures with jOOQ – Java, SQL and jOOQ.
When you write stored procedures and functions in your database, you want to ensure their correctness, just like with your…
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Design a Vending Machine in Java
How do you design a Vending Machine in Java? is one of the popular Java interview questions mostly asked at…
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A Condition is a Field – Java, SQL and jOOQ.
Starting with jOOQ 3.17, the Condition type extends the Field<Boolean> type. Because, that’s what the SQL standard thinks it is,…
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How to Find Duplicate values in a Table? SQL GROUP BY and Having Example| Leetcode Solution
Hello guys, if you are wondering how to find duplicate values in a table then don’t worry, there are many…
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Cannot resolve symbol ‘VERSION_3_17’ in jOOQ generated code – Java, SQL and jOOQ.
Starting with jOOQ 3.16 and #12601, there may be a compilation error with a message like this in your jOOQ…
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How to use EXISTS and NOT Exists in SQL? Example Query and Tutorial
Hello Guys, you might have heard about how useful the EXISTS clause is helpful in writing sophisticated queries. Still, at…
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The Second Best Way to Fetch a Spring Data JPA DTO Projection – Java, SQL and jOOQ.
I’ve just stumbled upon this great post by Vlad Mihalcea, titled The Best Way to Fetch a Spring Data JPA…
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