Question feed. If the option begins with a single dash - the argument should either directly follow the option name, or should be separated with a colon : or whitespace, depending on the option. The platform classes or the types in exported packages of the platform modules This is for compiled class files only. Thus, when searching for a type that is in a package that is known to be exported by a module, javac can locate the declaration directly and efficiently. If you are compiling for a release of the platform that supports the Extension Mechanism, then this option specifies the directories that contain the extension classes.
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