Usage: javac where possible options include: @ Read options and filenames from file -Akey[=value] Options to pass to annotation processors --add-modules (,)* Root modules to resolve in addition to the initial modules, or all modules on the module path if is ALL-MODULE-PATH. --boot-class-path , -bootclasspath Override location of bootstrap class files --class-path , -classpath , -cp Specify where to find user class files and annotation processors -d Specify where to place generated class files -deprecation Output source locations where deprecated APIs are used -encoding Specify character encoding used by source files -endorseddirs Override location of endorsed standards path -extdirs Override location of installed extensions -g Generate all debugging info -g:{lines,vars,source} Generate only some debugging info -g:none Generate no debugging info -h Specify where to place generated native header files --help, -help Print this help message --help-extra, -X Print help on extra options -implicit:{none,class} Specify whether or not to generate class files for implicitly referenced files -J Pass directly to the runtime system --limit-modules (,)* Limit the universe of observable modules --module , -m Compile only the specified module, check timestamps --module-path , -p Specify where to find application modules --module-source-path Specify where to find input source files for multiple modules --module-version Specify version of modules that are being compiled -nowarn Generate no warnings -parameters Generate metadata for reflection on method parameters -proc:{none,only} Control whether annotation processing and/or compilation is done. -processor [,,...] Names of the annotation processors to run; bypasses default discovery process --processor-module-path Specify a module path where to find annotation processors --processor-path , -processorpath Specify where to find annotation processors -profile Check that API used is available in the specified profile --release Compile for a specific VM version. Supported targets: 6, 7, 8, 9 -s Specify where to place generated source files -source Provide source compatibility with specified release --source-path , -sourcepath Specify where to find input source files --system |none Override location of system modules -target Generate class files for specific VM version --upgrade-module-path Override location of upgradeable modules -verbose Output messages about what the compiler is doing --version, -version Version information -Werror Terminate compilation if warnings occur