<\/span><\/h2>\n\n\n\nBy default, jenv does not automatically discover newly installed JDKs.<\/p>\n\n\n\n
Add the JDK using:<\/p>\n\n\n\n
jenv add \"$(\/usr\/libexec\/java_home -v 25)\"<\/code><\/pre>\n\n\n\nVerify that it has been registered:<\/p>\n\n\n\n
jenv versions<\/code><\/pre>\n\n\n\nYou should see entries similar to:<\/p>\n\n\n\n
system\n25\n25.0\nopenjdk64-25<\/code><\/pre>\n\n\n\n<\/span>Select Java 25<\/span><\/h2>\n\n\n\njenv global 25\njenv rehash<\/code><\/pre>\n\n\n\nConfirm the selected version:<\/p>\n\n\n\n
jenv version<\/code><\/pre>\n\n\n\n<\/span>If Java is still not changing<\/span><\/h2>\n\n\n\nThe most common cause is another Java installation appearing earlier in your PATH<\/code>.<\/p>\n\n\n\nCheck which executable is actually being used:<\/p>\n\n\n\n
which java<\/code><\/pre>\n\n\n\nIf the result is not<\/strong> a jenv shim, then jenv is not controlling your shell.<\/p>\n\n\n\n<\/span>Initialize jenv<\/span><\/h2>\n\n\n\nAdd the following near the end of your shell startup file:<\/p>\n\n\n\n
export PATH=\"$HOME\/.jenv\/bin:$PATH\"\neval \"$(jenv init -)\"<\/code><\/pre>\n\n\n\nReload your shell:<\/p>\n\n\n\n
source ~\/.zshrc<\/code><\/pre>\n\n\n\nor simply start a new terminal.<\/p>\n\n\n\n
<\/span>Enable JAVA_HOME management<\/span><\/h2>\n\n\n\nIf JAVA_HOME<\/code> still points to another installation, enable the export plugin:<\/p>\n\n\n\njenv enable-plugin export<\/code><\/pre>\n\n\n\nRestart your shell afterwards.<\/p>\n\n\n\n
<\/span>Verify everything<\/span><\/h2>\n\n\n\nwhich java\njava --version\njenv version\necho $JAVA_HOME<\/code><\/pre>\n\n\n\nExpected results:<\/p>\n\n\n\n
\nwhich java<\/code> points to a jenv<\/code> shim.<\/li>\n\n\n\njava --version<\/code> reports OpenJDK 25.<\/li>\n\n\n\njenv version<\/code> reports version 25.<\/li>\n\n\n\nJAVA_HOME<\/code> is managed by jenv.<\/li>\n<\/ul>\n\n\n\n<\/span>Key takeaway<\/span><\/h2>\n\n\n\nInstalling a JDK is only one part of the process. If multiple Java version managers are installed, whichever one appears first in your shell configuration controls the Java executable and JAVA_HOME<\/code>.<\/p>\n\n\n\nIf Java refuses to switch versions:<\/p>\n\n\n\n
\n- Verify that macOS recognizes the JDK.<\/li>\n\n\n\n
- Add it to jenv.<\/li>\n\n\n\n
- Select it with
jenv global<\/code>.<\/li>\n\n\n\n- Ensure the jenv shims appear before other Java installations in your
PATH<\/code>.<\/li>\n\n\n\n- Enable the jenv
export<\/code> plugin so that JAVA_HOME<\/code> stays synchronized.<\/li>\n<\/ol>\n","protected":false},"excerpt":{"rendered":"I recently installed OpenJDK 25 using Homebrew. The installation completed successfully, but my terminal continued to report an older Java version. The root cause turned out to be a conflict between jenv and another Java version manager. This post documents the diagnosis and the solution. Install OpenJDK Homebrew instructs you to register the JDK with […]<\/p>\n","protected":false},"author":4,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[21,23,1],"tags":[],"class_list":["post-822","post","type-post","status-publish","format-standard","hentry","category-java","category-programming","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/www.cyberaka.com\/index.php?rest_route=\/wp\/v2\/posts\/822","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.cyberaka.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.cyberaka.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.cyberaka.com\/index.php?rest_route=\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"https:\/\/www.cyberaka.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=822"}],"version-history":[{"count":1,"href":"https:\/\/www.cyberaka.com\/index.php?rest_route=\/wp\/v2\/posts\/822\/revisions"}],"predecessor-version":[{"id":823,"href":"https:\/\/www.cyberaka.com\/index.php?rest_route=\/wp\/v2\/posts\/822\/revisions\/823"}],"wp:attachment":[{"href":"https:\/\/www.cyberaka.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=822"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.cyberaka.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=822"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.cyberaka.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=822"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}