Deprecations and Deletions in Java 11

This lists talks about all the “deprecated” features or features that are removed from the JDK.

Eliminate the Java EE and CORBA Modules

  • JDK Enhancement Proposal 320 gets rid of the below mentioned modules from the JDK:
  • java.xml.ws (JAX-WS)
  • java.xml.bind (JAXB)
  • java.activation (JAF)
  • java.xml.ws.annotation (Common Annotations)
  • java.corba (CORBA)
  • java.transaction (JTA)
  • java.se.ee (aggregator module for the 6 formerly discussed modules)
  • jdk.xml.ws (tools for JAX-WS)
  • jdk.xml.bind (tools for JAXB)

Initially, the listed technologies were designed for the Java EE platform and were incorporated into the standard edition “Java SE” when Java 6 was released. They were marked “deprecated” in Java 9 and finally got rid of with Java 11. After upgrading to Java 11, should you miss these libraries, you can bring them back to your project, example through Maven dependencies.

Discontinue the Nashorn JavaScript Engine

In JDK 8, the JavaScript engine, “Rhino” was introduced and with JEP 335 in Java 11, it was tagged as “deprecated for removal” and is to be eliminated altogether in one of the subsequent versions. The reason for this is the quick advancement of ECMAScript (the standard behind JavaScript) and the node.js engine, which has made further improvement of Rhino too pricey.

Discontinue the Pack200 Tools and API

In Java 5, it introduced a special compression method Pack200 that reaches greater compression rates than standard methods, specifically for .jar and .class files. In the early 2000s, Pack200 saved as much bandwidth as possible. Nonetheless, the algorithm is complicated, and the further enhancement costs are no longer in line with the usefulness in times of 100-Mbit Internet lines. Thus, the tool has been tagged as “deprecated” with JDK Enhancement Proposal 336 and should be erased in one of the following Java releases.

JavaFX Goes Its Own Way

With Java 11, JavaFX and the related javapackager tool are no longer shipped with the JDK. Rather, you can a separate SDK can be downloaded from the JavaFX homepage.

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