jjs [] [-- ] -D (-Dname=value. Set a system property. This option can be repeated.) -cp, -classpath (-cp path. Specify where to find user class files.) -doe, -dump-on-error (Dump a stack trace on errors.) param: [true|false] default: false -fv, -fullversion (Print full version info of Nashorn.) param: [true|false] default: false -fx (Launch script as an fx application.) param: [true|false] default: false -h, -help (Print help for command line flags.) param: [true|false] default: false --language (Specify ECMAScript language version.) param: [es5|es6] default: es5 -ot, --optimistic-types (Use optimistic type assumptions with deoptimizing recompilation. This makes the compiler try, for any program symbol whose type cannot be proven at compile time, to type it as narrow and primitive as possible. If the runtime encounters an error because symbol type is too narrow, a wider method will be generated until steady stage is reached. While this produces as optimal Java Bytecode as possible, erroneous type guesses will lead to longer warmup. Optimistic typing is currently disabled by default, but can be enabled for significantly better peak performance.) param: [true|false] default: false -scripting (Enable scripting features.) param: [true|false] default: false -strict (Run scripts in strict mode.) param: [true|false] default: false -t, -timezone (Set timezone for script execution.) param: default: GMT -v, -version (Print version info of Nashorn.) param: [true|false] default: false