MySkillsUp is your go-to platform for mastering mobile and web app development

Understanding Object-Oriented Programming (OOP) in Java

Details: Written by: scelac; Category: Java; Last Updated: 25 March 2025; Hits: 237

If you're diving into Java, you've probably heard the term Object-Oriented Programming (OOP) thrown around a lot. But what exactly is OOP, and why is it such a big deal in Java? Don’t worry—I got you. This article is for your, no-jargon guide to understanding OOP in Java, contains real-world examples, best practices, and a few fun analogies to make things stick.

Unit testing of the JDBC layer using JUnit 5

Details: Written by: scelac; Category: Java; Last Updated: 10 March 2025; Hits: 200

Unit testing

Unit testing the JDBC (Java Database Connectivity) layer is crucial for building robust and maintainable database-driven applications. Many developers struggle with testing JDBC code because it directly interacts with external databases. However, with the right approach, you can effectively unit test your JDBC components, ensuring they function as expected.

Implement DAO pattern in java

Details: Written by: scelac; Category: Java; Last Updated: 07 March 2025; Hits: 266

The Data Access Object (DAO) pattern is a widely used design pattern in Java for managing database interactions in an efficient and structured manner. It separates the persistence logic from the business logic, improving code maintainability, reusability, and scalability. In this article, we will explore the DAO pattern, its advantages, and how to implement it in Java.

SOLID Principles in Java

Details: Written by: scelac; Category: Java; Last Updated: 06 March 2025; Hits: 187

The SOLID design principles are essential for writing clean, structured, and maintainable code. A strong grasp of these principles is a crucial skill for any programmer, as they form the foundation upon which many design patterns are built. These principles, introduced by Robert C. Martin (Uncle Bob), are widely used in object-oriented programming (OOP) to write clean and manageable code.

Handling Pagination with JDBC

Details: Written by: scelac; Category: Java; Last Updated: 06 March 2025; Hits: 234

MySQL
JDBC

When dealing with large datasets in Java applications, retrieving all records at once can be inefficient and resource-intensive. Instead, pagination is used to fetch data in manageable chunks, improving performance and user experience. This blog explores how to implement JDBC pagination effectively, using a single SQL's LIMIT and OFFSET clauses also via the implementation of PageRequest and PageResponse objects to optimize data retrieval in relational databases.

How to check if a String has at least one capital letter in Java

Details: Written by: scelac; Category: Java; Last Updated: 05 March 2025; Hits: 556

Checking if a string contains at least one capital letter is a common requirement in Java programming. This is especially relevant in scenarios like validating passwords, formatting user inputs, or implementing security checks. In Java 21, there are several efficient ways to achieve this, each with its own advantages.

Processing JDBC ResultSet

Details: Written by: scelac; Category: Java; Last Updated: 17 February 2025; Hits: 237

JDBC (Java Database Connectivity) is the standard API in Java that connects with relational databases. The ResultSet is a key component of JDBC, allowing developers to retrieve and process query results. Optimizing the handling of ResultSet can improve performance and ensure efficient resource management.

Batch Processing in JDBC

Details: Written by: scelac; Category: Java; Last Updated: 14 February 2025; Hits: 209

JDBC

Batch processing is a powerful feature in JDBC (Java Database Connectivity) that allows developers to execute multiple SQL statements efficiently in a single transaction. This technique significantly improves performance when dealing with bulk database operations, such as inserting or updating a large number of records.

JDBC - Java Database Connectivity

Details: Written by: scelac; Category: Java; Last Updated: 09 February 2025; Hits: 281

Java Database Connectivity (JDBC) is an API provided by Java that allows developers to connect and interact with databases. With Java 21, new enhancements in the language and libraries further improve JDBC usage, making database operations more efficient and developer-friendly.