{"id":229859,"date":"2023-04-25T11:02:25","date_gmt":"2023-04-25T18:02:25","guid":{"rendered":"https:\/\/devblogs.microsoft.com\/java\/?p=229859"},"modified":"2023-04-25T11:05:26","modified_gmt":"2023-04-25T18:05:26","slug":"microsoft-build-of-openjdk-april-2023-release","status":"publish","type":"post","link":"https:\/\/devblogs.microsoft.com\/java\/microsoft-build-of-openjdk-april-2023-release\/","title":{"rendered":"Microsoft Build of OpenJDK \u2013 April 2023 Release"},"content":{"rendered":"

We are happy to announce the latest April 2023 patch & security update release for the Microsoft Build of OpenJDK<\/a>. See the\u00a0release notes<\/a>\u00a0for detailed changes present in the Microsoft Build of OpenJDK binaries. And download<\/a>\u00a0or install<\/a> the binaries today.<\/p>\n

Check our release notes<\/a> page for details on fixes and enhancements.\u00a0As a reminder, the source code of our builds are now available on GitHub for further inspection: jdk17u<\/a> and jdk11u<\/a>.<\/p>\n

New Experimental Feature<\/h3>\n

We continue to experiment an improved Escape Analysis. You can read more from our October release<\/a>.\u00a0To enable this feature, developers must use the following JVM flags:<\/p>\n

-XX:+UnlockExperimentalVMOptions -XX:+ReduceAllocationMerges<\/pre>\n
Join the discussion on the new Escape Analysis work by visiting our respective GitHub repositories for\u00a0Escape Analysis work on OpenJDK 11<\/a>, and\u00a0Escape Analysis work on OpenJDK 17<\/a>.<\/p>\n
Class Data Sharing enabled in JDK 17 binaries<\/h3>\n
We have now enabled the CDS archives in the MIcrosoft Build of OpenJDK 17 binaries for Linux, Windows, and macOS for x64 architecture. For all other versions and architectures, CDS archives can be generated after the JDK installation by calling java -Xshare:dump<\/span>.<\/p>\n
Non-root user in container images<\/h3>\n
We have now included a non-root user in the container images for developers interested in enhanced security at the container level. The images now contain the user app<\/code>, which can be used like in the following example:<\/p>\n
FROM<\/strong> mcr.microsoft.com\/openjdk\/jdk:17-mariner\r\n\r\nWORKDIR<\/strong> \/home\/app\r\nCOPY<\/strong> japp.jar japp.jar\r\nUSER<\/strong> app\r\n\r\nCMD<\/strong> [\"java\", \"-jar\", \"\/opt\/app\/japp.jar\"]<\/pre>\n
In the above example, the application binary is copied as\u00a0root<\/code>, since the images remain with\u00a0root<\/code>\u00a0by default. The application then is executed as\u00a0app<\/code>. The folder\u00a0\/home\/app<\/code>\u00a0is also owned by user\u00a0app<\/code>, giving the application a writeable filesystem.<\/p>\n
Purge of Azul Zulu for Azure artifacts<\/h3>\n
Announced in June 30th, 2021<\/a>, the Azul Zulu for Azure builds of OpenJDK are no longer supported and no longer updated. The repositories holding those binaries have been removed or will be removed at some point soon by Azul Systems. Users are urged to move to Microsoft Build of OpenJDK binaries for Java 11 and Java 17, or Eclipse Temurin for Java 8.<\/p>\n
Important: <\/strong>On December 31st, 2023, the remaining artifacts and container images will be purged from public repositories. Ensure your build pipelines move to an up to date build of OpenJDK.<\/p>\n","protected":false},"excerpt":{"rendered":"
We are happy to announce the latest April 2023 patch & security update release for the Microsoft Build of OpenJDK. See the\u00a0release notes\u00a0for detailed changes present in the Microsoft Build of OpenJDK binaries. And download\u00a0or install the binaries today. Check our release notes page for details on fixes and enhancements.\u00a0As a reminder, the source code […]<\/p>\n","protected":false},"author":8937,"featured_media":227205,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[1,8,249],"tags":[],"class_list":["post-229859","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-java","category-open-source","category-openjdk"],"acf":[],"blog_post_summary":"
We are happy to announce the latest April 2023 patch & security update release for the Microsoft Build of OpenJDK. See the\u00a0release notes\u00a0for detailed changes present in the Microsoft Build of OpenJDK binaries. And download\u00a0or install the binaries today. Check our release notes page for details on fixes and enhancements.\u00a0As a reminder, the source code […]<\/p>\n","_links":{"self":[{"href":"https:\/\/devblogs.microsoft.com\/java\/wp-json\/wp\/v2\/posts\/229859","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/devblogs.microsoft.com\/java\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/devblogs.microsoft.com\/java\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/devblogs.microsoft.com\/java\/wp-json\/wp\/v2\/users\/8937"}],"replies":[{"embeddable":true,"href":"https:\/\/devblogs.microsoft.com\/java\/wp-json\/wp\/v2\/comments?post=229859"}],"version-history":[{"count":0,"href":"https:\/\/devblogs.microsoft.com\/java\/wp-json\/wp\/v2\/posts\/229859\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/devblogs.microsoft.com\/java\/wp-json\/wp\/v2\/media\/227205"}],"wp:attachment":[{"href":"https:\/\/devblogs.microsoft.com\/java\/wp-json\/wp\/v2\/media?parent=229859"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/devblogs.microsoft.com\/java\/wp-json\/wp\/v2\/categories?post=229859"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/devblogs.microsoft.com\/java\/wp-json\/wp\/v2\/tags?post=229859"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}