The core idea behind JPA as opposed to JDBC, is that for the most part, JPA lets you avoid the need to “think relationally.” In JPA, you define your persistence rules in the realm of Java code and ...

Object-oriented systems are usually partitioned into layers of related responsibilities and only dependencies in one direction are allowed, from higher layers (more specific, less reusable) to lower ...

Method references are a shorthand way to write lambda expressions that call a single method. Rather than implementing a method in a functional interface, a method reference simply points to an ...

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Java 25 LTS is officially here, and with it comes a massive update to IntelliJ IDEA. The new version is all about making the ...

But how many developers understand how HashMap works internally? A few days ago, I read a lot of the source code for java.util.HashMap (Java 7 followed by Java 8) to gain a deeper understanding of ...