{"id":183379,"date":"2026-09-17T16:54:20","date_gmt":"2026-09-17T14:54:20","guid":{"rendered":"https:\/\/prohoster.info\/blog\/news\/vypusk-java-se-27-i-openjdk-27"},"modified":"2026-09-17T16:54:25","modified_gmt":"2026-09-17T14:54:25","slug":"java-se-27-and-openjdk-27-released","status":"publish","type":"post","link":"https:\/\/prohoster.info\/hu\/blog\/news\/java-se-27-and-openjdk-27-released","title":{"rendered":"A Java SE 27 \u00e9s OpenJDK 27 kiad\u00e1sa","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Hat h\u00f3napnyi fejleszt\u00e9s ut\u00e1n az Oracle kiadta a Java SE 27-t (Java Platform, Standard Edition 27), amelynek referencia-implement\u00e1ci\u00f3ja az OpenJDK ny\u00edlt projekt. A Java SE 27 n\u00e9h\u00e1ny elavult funkci\u00f3 elt\u00e1vol\u00edt\u00e1sa ellen\u00e9re meg\u0151rzi a h\u00e1trameneti kompatibilit\u00e1st a kor\u00e1bbi Java platformverzi\u00f3kkal \u2014 a kor\u00e1bban \u00edrt Java-projektek t\u00f6bbs\u00e9ge v\u00e1ltoztat\u00e1s n\u00e9lk\u00fcl m\u0171k\u00f6dni fog az \u00faj verzi\u00f3 alatt. A telep\u00edt\u00e9sre k\u00e9sz Java SE 27 kiad\u00e1sok (JDK, JRE \u00e9s Server JRE) rendelkez\u00e9sre \u00e1llnak Linux (x86_64, AArch64), Windows (x86_64) \u00e9s macOS (x86_64, AArch64) rendszerekre. Az OpenJDK projekt keretein bel\u00fcl kifejlesztett Java SE 27 referencia-implement\u00e1ci\u00f3 teljes m\u00e9rt\u00e9kben ny\u00edlt a GPLv2 licenc alatt, a GNU ClassPath kiv\u00e9telekkel, amelyek lehet\u0151v\u00e9 teszik a kereskedelmi term\u00e9kekkel val\u00f3 dinamikus \u00f6sszekapcsol\u00e1st.     <\/p>\n<p>A Java SE 27 a szok\u00e1sos t\u00e1mogat\u00e1si id\u0151szak\u00fa kiad\u00e1sok k\u00f6z\u00e9 tartozik, amelyhez a friss\u00edt\u00e9seket a k\u00f6vetkez\u0151 kiad\u00e1sig adj\u00e1k ki. Hossz\u00fa t\u00e1v\u00fa t\u00e1mogat\u00e1sra (LTS) a Java SE 25, a Java SE 21 vagy a Java SE 17 javasolt, amelyek friss\u00edt\u00e9seit 2033, 2031 \u00e9s 2029 \u00e9vig adj\u00e1k ki (nyilv\u00e1nos \u2014 2030, 2028 \u00e9s 2026 szeptember\u00e9ig). A Java SE 8 LTS \u00e1g\u00e1nak kib\u0151v\u00edtett t\u00e1mogat\u00e1sa 2030-ig, m\u00edg a Java SE 11 eset\u00e9ben 2032-ig tart.       <\/p>\n<p>A Java SE 27-ben v\u00e9grehajtott v\u00e1ltoz\u00e1sok (1, 2, 3, 4):   <\/p>\n<ul>\n<li class=\"l\"> Alap\u00e9rtelmez\u00e9s szerint minden k\u00f6rnyezethez a G1 (Garbage-First) szem\u00e9tgy\u0171jt\u0151 ker\u00fcl alkalmaz\u00e1sra, amelyet kor\u00e1bban szerverrendszerekben haszn\u00e1ltak. A G1 optimaliz\u00e1lva van a multiprocesszoros rendszerekhez, nagy mem\u00f3ria haszn\u00e1lat mellett, a k\u00e9sleltet\u00e9s el\u0151rejelz\u00e9se \u00e9s a magas \u00e1tereszt\u0151k\u00e9pess\u00e9g k\u00f6z\u00f6tti egyens\u00falyoz\u00e1sra. A G1 m\u0171k\u00f6d\u00e9se sor\u00e1n a mem\u00f3ri\u00e1t sok kis r\u00e9gi\u00f3ra osztja, \u00e9s els\u0151dlegesen azokat a r\u00e9gi\u00f3kat tiszt\u00edtja meg, ahol t\u00f6bb a fel nem haszn\u00e1lt objektum \u00e9s kevesebb az akt\u00edvan haszn\u00e1lt adat.\n<li class=\"l\"> A HotSpot JVM alap\u00e9rtelmez\u00e9s szerint kompakt objektumfejl\u00e9ceket haszn\u00e1l. A 64 bites rendszerek fejl\u00e9ceinek m\u00e9rete 96 bitr\u0151l 64 bitre cs\u00f6kkent, ami cs\u00f6kkentette a mem\u00f3riafogyaszt\u00e1st \u00e9s n\u00f6velte az adatok val\u00f3sz\u00edn\u0171s\u00e9g\u00e9t a processzor gyors\u00edt\u00f3t\u00e1r\u00e1ba. A SPECjbb2015 tesztek sor\u00e1n a mem\u00f3riafogyaszt\u00e1s 22%-kal, a CPU terhel\u00e9se 8%-kal cs\u00f6kkent, \u00e9s a szem\u00e9tgy\u0171jt\u0151 m\u0171veletek sz\u00e1ma 15%-kal egy cs\u00f6kkent. JSON parser tesztel\u00e9sekor a tesztel\u00e9si id\u0151 10%-kal cs\u00f6kkent.\n<li class=\"l\"> A TLS 1.3 megval\u00f3s\u00edt\u00e1s\u00e1ba beletartozik a hibrid kulcsegyes\u00edt\u00e9si s\u00e9m\u00e1k t\u00e1mogat\u00e1sa, amely az ML-KEM (CRYSTALS-Kyber) algoritmust kombin\u00e1lja, amely ellen\u00e1ll\u00f3 a kvantumsz\u00e1m\u00edt\u00f3g\u00e9pekkel szemben, klasszikus elliptikus g\u00f6rb\u00e9ken alapul\u00f3 ECDHE algoritmusokkal: X25519MLKEM768 (ECDHE X25519 g\u00f6rb\u00e9vel + ML-KEM-768), SecP256r1MLKEM76 (ECDHE secp256r1 g\u00f6rb\u00e9vel + ML-KEM-768) \u00e9s SecP384r1MLKEM1024 (ECDHE secp384r1 g\u00f6rb\u00e9vel + ML-KEM-1024). Az API javax.net.<a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/hu\/ssl-sertifikat\/\"   title=\"ssl\" data-wpil-keyword-link=\"linked\">ssl<\/a> Ezek a s\u00e9m\u00e1k alap\u00e9rtelmez\u00e9s szerint enged\u00e9lyezve vannak, \u00e9s nem ig\u00e9nyelnek m\u00f3dos\u00edt\u00e1st a programokban.\n<li class=\"l\"> A JDK Flight Recorder (JFR) eszk\u00f6zk\u00e9szlethez, amelyet a teljes\u00edtm\u00e9ny monitoroz\u00e1s\u00e1ra, profiloz\u00e1s\u00e1ra \u00e9s diagnosztiz\u00e1l\u00e1s\u00e1ra haszn\u00e1lnak, hozz\u00e1adt\u00e1k a tiszt\u00edt\u00e1s t\u00e1mogat\u00e1s\u00e1t a mentett diagnosztikai inform\u00e1ci\u00f3kban, mint p\u00e9ld\u00e1ul a parancssori argumentumok, a k\u00f6rnyezeti v\u00e1ltoz\u00f3k kezdeti \u00e9rt\u00e9kei \u00e9s a rendszer tulajdons\u00e1gai. A v\u00e1ltoztat\u00e1s megakad\u00e1lyozza a bizalmas adatok sziv\u00e1rg\u00e1s\u00e1t, amelyeket a profilozott folyamat kezel, mint p\u00e9ld\u00e1ul az k\u00f6rnyezeti v\u00e1ltoz\u00f3kon kereszt\u00fcl \u00e1tadott hiteles\u00edt\u00e9si tokenek \u00e9s API hozz\u00e1f\u00e9r\u00e9si kulcsok.\n<li class=\"l\"> A Lazy Constants API harmadik el\u0151zetes kiad\u00e1sa megval\u00f3sult, amely lehet\u0151v\u00e9 teszi az olyan objektumok kezel\u00e9s\u00e9t, amelyek v\u00e1ltozatlan adatokat tartalmaznak, \u00e9s a JVM-ben konstansk\u00e9nt vannak kezelve. Az ilyen objektumokra teljes\u00edtm\u00e9nyoptimaliz\u00e1l\u00f3 l\u00e9p\u00e9sek vonatkoznak, amelyek hasonl\u00f3ak a 'final' kulcssz\u00f3val rendelkez\u0151 mez\u0151kh\u00f6z. A 'final'-lal ellent\u00e9tben az \u00faj API elv\u00e1lasztja a tart\u00f3s \u00e9rt\u00e9kek l\u00e9trehoz\u00e1s\u00e1t \u00e9s inicializ\u00e1l\u00e1s\u00e1t, garant\u00e1lja, hogy az \u00e9rt\u00e9ket csak egyszer lehet inicializ\u00e1lni, cs\u00f6kkenti a programok ind\u00edt\u00e1si idej\u00e9t \u00e9s lehet\u0151v\u00e9 teszi a felhaszn\u00e1l\u00f3i k\u00f3dban a konstansok \u00f6sszevon\u00e1sa (constant-folding) optimaliz\u00e1l\u00e1sok alkalmaz\u00e1s\u00e1t, amelyeket kor\u00e1bban csak a JDK bels\u0151 k\u00f3dj\u00e1ban haszn\u00e1ltak.         class Application {         \/\/ Volt:         \/\/ static final UserService USERS = new UserService();         \/\/ Most m\u00e1r lehets\u00e9ges:         static final StableValue USERS = StableValue.of();           public static UserService users() {            return USERS.orElseSet(UserService::new);         }      }\n<li class=\"l\"> A mint\u00e1zatilleszt\u00e9si mechanizmusban egy \u00f6t\u00f6dik el\u0151zetes lehet\u0151s\u00e9g javasolt az primit\u00edv t\u00edpusok (int, byte, char \u00e9s m\u00e1s, nem objektum t\u00edpusok) haszn\u00e1lat\u00e1ra mindenf\u00e9le sablonban, az 'instanceof' oper\u00e1torban \u00e9s a 'switch' blokkokban.         switch (x.getStatus()) {         case 0 -&gt; 'okay';         case 1 -&gt; 'warning';         case 2 -&gt; 'error';         case int i -&gt; 'ismeretlen st\u00e1tusz: ' + i;     }     if (i instanceof byte b) {      \u2026 b \u2026     }\n<li class=\"l\"> A hetedik el\u0151zetes API verzi\u00f3 aj\u00e1nlott a struktur\u00e1lt p\u00e1rhuzamoss\u00e1g (Structured Concurrency) tesztel\u00e9s\u00e9re, amely megk\u00f6nny\u00edti a t\u00f6bb sz\u00e1lon fut\u00f3 alkalmaz\u00e1sok fejleszt\u00e9s\u00e9t az\u00e1ltal, hogy a k\u00fcl\u00f6nb\u00f6z\u0151 sz\u00e1lakon v\u00e9grehajtott feladatokat egyetlen blokkk\u00e9nt kezeli.\n<li class=\"l\"> Megval\u00f3sult a tizenkettedik tesztel\u00e9si API megval\u00f3s\u00edt\u00e1s, amely vektoros sz\u00e1m\u00edt\u00e1si funkci\u00f3kat biztos\u00edt, \u00e9s a x86_64 \u00e9s AArch64 processzorok vektori\u00e1lis utas\u00edt\u00e1sait haszn\u00e1lva lehet\u0151v\u00e9 teszi t\u00f6bb \u00e9rt\u00e9k egyidej\u0171 kezel\u00e9s\u00e9t (SIMD). Ezzel szemben a JIT-kompil\u00e1tor HotSpot \u00e1ltal ny\u00fajtott avtvorkol\u00e1si lehet\u0151s\u00e9gekkel \u00f6sszhangban a \u00faj API lehet\u0151s\u00e9get ad a vektoriz\u00e1l\u00e1s explicit kezel\u00e9s\u00e9re az adatok p\u00e1rhuzamos feldolgoz\u00e1sa \u00e9rdek\u00e9ben.\n<li class=\"l\"> El\u00e9rhet\u0151 a harmadik el\u0151zetes API verzi\u00f3 a kriptogr\u00e1fiai kulcsokkal, tan\u00fas\u00edtv\u00e1nyokkal \u00e9s visszavont tan\u00fas\u00edtv\u00e1nyok list\u00e1ival val\u00f3 objektumok k\u00f3dol\u00e1s\u00e1ra \u00e9s dek\u00f3dol\u00e1s\u00e1ra, a PEM (Privacy-Enhanced Mail) form\u00e1tum haszn\u00e1lat\u00e1val.         <\/ul>\n<p>  Tov\u00e1bb\u00e1 \u00e9rdemes megeml\u00edteni a JavaFX 27 grafikus felhaszn\u00e1l\u00f3i fel\u00fclet\u0171 alkalmaz\u00e1sok fejleszt\u00e9s\u00e9re szolg\u00e1l\u00f3 platform friss\u00edt\u00e9s\u00e9nek megjelen\u00e9s\u00e9t. A k\u00f6vetkez\u0151 \u00f3r\u00e1kban v\u00e1rhat\u00f3 a GraalVM 27 univerz\u00e1lis virtu\u00e1lis g\u00e9p kiad\u00e1sa is, amely t\u00e1mogatja a JavaScript (Node.js), Python, Ruby, R, b\u00e1rmilyen JVM-n nyelven (Java, Scala, Clojure, Kotlin) \u00e9s LLVM bitk\u00f3dot k\u00e9pez\u0151 nyelvek (C, C++, Rust) futtat\u00e1s\u00e1t.<br \/>\n<br \/>Forr\u00e1s: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=66293\">opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u041f\u043e\u0441\u043b\u0435 \u0448\u0435\u0441\u0442\u0438 \u043c\u0435\u0441\u044f\u0446\u0435\u0432 \u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u043a\u0438 \u043a\u043e\u043c\u043f\u0430\u043d\u0438\u044f Oracle \u043e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043b\u0430 \u043f\u043b\u0430\u0442\u0444\u043e\u0440\u043c\u0443 Java SE 27 (Java Platform, Standard Edition 27), \u0432 \u043a\u0430\u0447\u0435\u0441\u0442\u0432\u0435 \u044d\u0442\u0430\u043b\u043e\u043d\u043d\u043e\u0439 \u0440\u0435\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u0438 \u043a\u043e\u0442\u043e\u0440\u043e\u0439 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u0435\u0442\u0441\u044f \u043e\u0442\u043a\u0440\u044b\u0442\u044b\u0439 \u043f\u0440\u043e\u0435\u043a\u0442 OpenJDK. \u0417\u0430 \u0438\u0441\u043a\u043b\u044e\u0447\u0435\u043d\u0438\u0435\u043c \u0443\u0434\u0430\u043b\u0435\u043d\u0438\u044f \u043d\u0435\u043a\u043e\u0442\u043e\u0440\u044b\u0445 \u0443\u0441\u0442\u0430\u0440\u0435\u0432\u0448\u0438\u0445 \u0432\u043e\u0437\u043c\u043e\u0436\u043d\u043e\u0441\u0442\u0435\u0439 \u0432 Java SE 27 \u0441\u043e\u0445\u0440\u0430\u043d\u0435\u043d\u0430 \u043e\u0431\u0440\u0430\u0442\u043d\u0430\u044f \u0441\u043e\u0432\u043c\u0435\u0441\u0442\u0438\u043c\u043e\u0441\u0442\u044c \u0441 \u043f\u0440\u043e\u0448\u043b\u044b\u043c\u0438 \u0432\u044b\u043f\u0443\u0441\u043a\u0430\u043c\u0438 \u043f\u043b\u0430\u0442\u0444\u043e\u0440\u043c\u044b Java &#8212; \u0431\u043e\u043b\u044c\u0448\u0438\u043d\u0441\u0442\u0432\u043e \u0440\u0430\u043d\u0435\u0435 \u043d\u0430\u043f\u0438\u0441\u0430\u043d\u043d\u044b\u0445 Java-\u043f\u0440\u043e\u0435\u043a\u0442\u043e\u0432 \u0431\u0435\u0437 \u0438\u0437\u043c\u0435\u043d\u0435\u043d\u0438\u0439 \u0431\u0443\u0434\u0443\u0442 \u0440\u0430\u0431\u043e\u0442\u043e\u0441\u043f\u043e\u0441\u043e\u0431\u043d\u044b \u043f\u0440\u0438 \u0437\u0430\u043f\u0443\u0441\u043a\u0435 \u043f\u043e\u0434 [&hellip;]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":10,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-183379","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.3 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u041f\u043e\u0441\u043b\u0435 \u0448\u0435\u0441\u0442\u0438 \u043c\u0435\u0441\u044f\u0446\u0435\u0432 \u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u043a\u0438 \u043a\u043e\u043c\u043f\u0430\u043d\u0438\u044f Oracle \u043e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043b\u0430 \u043f\u043b\u0430\u0442\u0444\u043e\u0440\u043c\u0443 Java SE 27 (Java Platform, Standard Edition 27), \u0432 \u043a\u0430\u0447\u0435\u0441\u0442\u0432\u0435 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