![]() And they may be annoyed to have to make a build of their app for every host OS (macOS, Linux, Windows, etc.). Some folks are disappointed to see the passing of the Java Everywhere dream. The only folks consciously installing a JDK will be developers & server-side sysadmins. Java-based apps are expected to bundle their own Java implementation. Java Applets in a browser and Java Web Start app delivery are both being phased out, leaving the end-user with no need for a JRE. ![]() Oracle no longer intends for end-users to be installing a JRE or a JDK. I noticed that Java 11 doesn't have a JRE folder. In contrast a server-side Servlet-based app or Microservices server need not yet modularize, though likely a good idea to do so eventually. Modularizing and using jlink tooling is probably the best way to go about that. But in your case, for a GUI desktop or mobile app, then you need to package a JVM within your app. You can continue to develop in Java 11 without modularizing your code. Most existing apps can run as-is in Java 11. No, modularization is not required, strictly speaking. What I understood is that Java 11 is enforcing to modularize our application ➥ Bundle a Java implementation within your Java-based app. How will my client use my application without jre? Just install the OpenJDK on the client machines and make sure you add the $JAVA_HOME/bin to the system path, just as you had to do with old JREs.Īnd oh, strip the Windows directory tree of any java*.exe files which some versions of the old JRE installer were wont to place there, as well as the system path which also had some weird entries added by some JRE installers. This JDK when installed is actually smaller on your hard disk than the old JRE alone used to be, removing even the somewhat valid argument that you'd want a separate JRE for devices with limited disk space, an argument that never explained why 2 JREs would be installed with a single JDK in the first place but was made to justify the need for a JRE as a stripped down runtime environment for the JDK.Įrgo, there is no need for a separate JRE, and there hasn't been one for a long time, let alone for including and forcibly installing it as part of the JDK installation.Īnd no, you don't need to create your own JRE. This has always puzzled me as it's a complete waste of effort on the part of the maintainers to make this so, and a complete waste of disk space on the computer you install it on, as that JRE just duplicates some of the things the JDK can do already.įinally, with Java 11, Oracle and the OpenJDK team decided to end this silliness and just distribute a single thing, the JDK. In fact, it shipped with TWO identical JREs, one installed inside the JDK installation directory and one outside it. As a result, those packages have moved, and this will require changes to package imports.For 20 years, the JDK shipped with a JRE which was just a subset of its functionality installed in a different directory on your system. ![]() Oracle has chosen the Eclipse Foundation as the new home for the Java Platform Enterprise Edition.Due to lack of browser support for Java plugins, the Applet API has been deprecated.The “var” keyword only affects local variables, and the Type Inference keeps you repeating the same text over and over again A developer-friendly keyword “var” was added to help to reduce boilerplate coding.This is very interesting for serverless-compute and one-offs in Kubernetes A REPL (read-eval-print-loop) tool, JShell, was added to support interactive programming, similar to what is available in Python.Modularization also enables code to be refactored for easier maintenance, through a self-describing collection of code, data, and resources. The introduction of modularity to better support scaling down to small computing devices.However, the biggest differences between Java 8 and Java 11 are: There are always a lot of little things that go into a release of Java, or any product for that matter.
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