#JavaSE17 Sealed classes is to have the possibility for a superclass to be widely accessible, but not widely extensible. Sealing creates a closed hierarchy. 3 important constraints on its permitted subclasses⬇️

JSR 392 Java SE 17 has posted its Maintenance Release: jcp.org/aboutJava/comm… #JSRupdate #JSR392 #JavaSE17

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JSR 392 Java SE 17 has just published its Final Release: jcp.org/aboutJava/comm… #JSRupdate #JSR392 #JavaSE17

JSR 392 Java SE 17 has posted a draft for Public Review: jcp.org/aboutJava/comm… #JSR392 #JavaSE17 #JSRupdate

JSR 392 Java SE 17 has just been posted: jcp.org/en/jsr/detail?… #JSRupdate #JSR392 #javaSE17