Core Java
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Function pointer style in Java
In languages like C and C++, function pointers allow direct reference to a function, enabling callbacks, event handling, and flexible…
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Deep Dive into Java HashMap: Performance Optimizations and Pitfalls
When it comes to managing key-value pairs in Java, the HashMap is one of the most widely used data structures.…
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Persisting Quartz Scheduler Jobs in a Database
When building Spring web applications, recurring tasks such as sending reminders, generating reports, or processing background data are a common…
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Implement mTLS Calls in Java
Mutual TLS (mTLS) is an enhancement of TLS where both the server and the client present and validate X.509 certificates.…
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Comparison of Google Protobuf ByteString and Byte[]
Binary data is common in networked apps: images, protobuf payloads, encryption outputs, etc. When using Protocol Buffers in Java you…
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What are DTOs (Data Transfer Objects)
In enterprise-level Java development, structuring data exchange between different application layers is a critical concern. Applications typically consist of several…
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What’s New in Mockito 2025? From Java 21 Support to AI-Powered Testing
Mockito has long been the go-to mocking framework in the Java ecosystem. Whether you’re writing small unit tests or working…
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HibernateException: Illegal Collection Association Fix
In Hibernate, the exception IllegalAttemptToAssociateACollectionWithTwoOpenSessionsException occurs when a collection or entity is associated with two active Hibernate sessions simultaneously. This…
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Java Mail Inline Images in Emails Example
Sending rich emails with embedded images can significantly improve user engagement. The JavaMail API allows developers to send inline images…
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