In this section, we will cover three technologies:
- Java agent
- Polyglot programming
- Annotation processing
Knowing them is not a must for a Java professional. Knowing about them is. Java agents are used mainly in development environments and in operations. They are complex runtime technologies that interact with the already-running JVM. Annotation processing is another area. Annotation processors are plugged into the Java compiler. Polyglot programming is in the middle. It is JVM programming, just like programming in Java, but using a different language or, perhaps, a different language and Java together. Or even many languages, such as Jython, Groovy, or Clojure, and Java together.
We will discuss these technologies so that you get an idea about what they are and where to look for more information in case you want to learn more about them.
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