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Source: Series of Questions in Backend Developer Interviews Part 3 1. Deep Copy vs Shallow Copy – What Really Happens? Developers often say “shallow copy copies reference, deep copy copies data,” but this shortcut hides the subtlety that expla...

Source: Ways to Use the Factory Pattern for Simplified Object Creation in Java 1. The Factory Pattern Concept In modern Java development, repeatedly using new to create objects can scatter construction logic throughout the code and make future...

Java 25 is out, and it brings some exciting improvements under the hood. One of the most impactful features for backend developers is Compact Object Headers (JEP 519). Even if your code hasn’t changed, upgrading to Java 25 can reduce memory usage, im...
