run-time | The Blog Pros

June 17, 2019

The Java Platform Module System

Although Java 9 is not the latest JDK release (to be more specific, it was released back in 2017), it was the biggest update in the history of the JDK. Despite that, most Java programmers hardly mention its most significant feature — the Java Platform Module System.

This is primarily because most business applications still use Java 8. For now, it has demonstrated stability and newer releases need time to spread across the IT world.

June 11, 2019

Reflection Selector Expression

Java::Geci is a code generator that runs during unit test time. If the generated code fits the actual version of the source code, then the test does not fail. If there is a need for any modification, then the tests modify the source code and fail. For example, there is a new field that needs a setter and getter. Then, the accessor generator will generate the new setter and getter and then it fails. If there is no new field, then the generated code is just the one that is already there — no reason to touch the source code: The test that started the generator finishes successfully.

Because Java::Geci generators run as tests, which is at run-time, and because they need access to the Java code structures for which they generate code, Java reflection is key for these generators.

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