![]() When generating a HashMap with the argument 60, one might think that means that this HashMap offers space for 60 mappings. Changes to Preallocated HashMap Creationīefore we get into the changes, some background on HashMaps and their flaws for those not familiar.Let's take a look at what Java 19 brings us and what it leaves behind. This release has been noted to be in "Rampdown Phase One," as it does not include any new JDK Enhancement Proposals (JEPs), only bug fixes and minor improvements. ![]() Not being a long-term support release means the Premier Support for this version will end in March 2023. Here is a flowchart that might help guide you in choosing a source for Java 11.Java 19 was released September 20, 2022. This approach using rapid delivery train with LTS is new in the Java world. Free-of-cost implementations may also receive updates under LTS from some providers. This applies, at least, customers paying a commercial vendor. This means the version will receive updates and fixes for years instead of months. ![]() Versions 8 and 11 are both LTS, as will be version 17. The exception is that every three years, the sixth release in succession shall be designated a Long-Term Support (LTS) version. However, these versions may not be supported free-of-cost with patches after the successive version arrives. ![]() These are production-ready fully-tested releases. Every six months a new version arrives, as discussed in this article. Oracle and the Java community have adopted a faster cadences for releases, a fashion known as the Release Train. Note that Java development has changed recently. Java 12, not yet released for production, runs on High Sierra as well. The implementations of Java 8, 9, 10, and 11 based on OpenJDK from vendors such as Azul Systems, Oracle, and AdoptOpenJDK run on macOS High Sierra and Mojave (and some older macOS as well). ![]()
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