src/jdk.compiler/share/classes/com/sun/tools/javac/resources/javac.properties

*** 1,7 ***
  #
! # Copyright (c) 1999, 2025, Oracle and/or its affiliates. All rights reserved.
  # DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  #
  # This code is free software; you can redistribute it and/or modify it
  # under the terms of the GNU General Public License version 2 only, as
  # published by the Free Software Foundation.  Oracle designates this
--- 1,7 ---
  #
! # Copyright (c) 1999, 2026, Oracle and/or its affiliates. All rights reserved.
  # DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  #
  # This code is free software; you can redistribute it and/or modify it
  # under the terms of the GNU General Public License version 2 only, as
  # published by the Free Software Foundation.  Oracle designates this

*** 109,10 ***
--- 109,12 ---
      Specify whether to generate class files for implicitly referenced files
  javac.opt.pkginfo=\
      Specify handling of package-info files
  javac.opt.multi-release=\
      Specify which release to use in multi-release jars
+ javac.opt.preview-mode=\
+     Specify whether preview mode should be enabled
  javac.opt.arg.class=\
      <class>
  javac.opt.arg.class.list=\
      <class1>[,<class2>,<class3>...]
  javac.opt.arg.flag=\

*** 143,10 ***
--- 145,12 ---
      Name and optional arguments for a plug-in to be run
  javac.opt.arg.plugin=\
      "name args"
  javac.opt.arg.multi-release=\
      <release>
+ javac.opt.arg.preview-mode=\
+     true/false
  javac.opt.arg.default.module.for.created.files=\
      <module-name>
  
  ## extended options