Core Java
Most Java developers who struggle with Spring or interviews have the same root problem — shaky fundamentals. These tutorials go deep on the concepts that actually matter: memory, OOP, serialization, and the parts of Java most tutorials skip over.
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Final Finally And Finalize Keyword Comparison In Java
⏱ 12 min read
Gentle Introduction To Programming With Java
⏱ 12 min read
How Relational And Logical Operators Power Decision Logic In Java
⏱ 8 min read
Introduction To Java Serialization
⏱ 12 min read
Introduction To Jdbc Database Connectivity For Java Programmers
⏱ 12 min read
Java Aggregation And Composition Understanding Object Relationships
⏱ 10 min read
Java Hashcode And Equals Explained
⏱ 12 min read
Java Optional Complete Guide With Examples
⏱ 12 min read
Java Pass By Reference Or Pass By Value
⏱ 12 min read
Jep 286 Local Variable Type Inference
⏱ 8 min read
Jep 361 Switch Expressions
⏱ 8 min read
Jep 378 Text Blocks
⏱ 10 min read
Jep 394 Pattern Matching Instanceof
⏱ 6 min read
Jep 395 Records
⏱ 8 min read
Jep 409 Sealed Classes
⏱ 12 min read
Jep 441 Pattern Matching For Switch
⏱ 8 min read
Jep 444 Virtual Threads
⏱ 12 min read
Mastering Javas Logger Class From Println To Professional Logging
⏱ 8 min read
Try With Resources Tutorial
⏱ 12 min read
Understanding The Main Method In Java Building A Command Line Tool
⏱ 12 min read
Understanding The Static Keyword In Java Class Level Behavior And Initialization
⏱ 12 min read
What Exactly Are Classes And Inner Classes In Java
⏱ 12 min read
What Is The Hashcode Method In Java And How Is It Used
Frequently Asked Questions
Common questions about Core Java.