| jjs(1) | Basic Tools | jjs(1) |
NAME¶
jjs - Invokes the Nashorn engine.
SYNOPSIS¶
jjs [options] [script-files] [-- arguments]
options
One or more options of the jjs command, separated
by spaces. For more information, see Options.
script-files
One or more script files which you want to interpret
using Nashorn, separated by spaces. If no files are specified, an interactive
shell is started.
arguments
All values after the double hyphen marker (--) are
passed through to the script or the interactive shell as arguments. These
values can be accessed by using the arguments property (see Example
3).
DESCRIPTION¶
The jjs command-line tool is used to invoke the Nashorn engine. You can use it to interpret one or several script files, or to run an interactive shell.
OPTIONS¶
The options of the jjs command control the conditions under which scripts are interpreted by Nashorn.
-cp path
-classpath path
Specifies the path to the supporting class files To set
multiple paths, the option can be repeated, or you can separate each path with
a colon (:).
-Dname=value
Sets a system property to be passed to the script by
assigning a value to a property name. The following example shows how to
invoke Nashorn in interactive mode and assign myValue to the property
named myKey:
This option can be repeated to set multiple properties.
>> jjs -DmyKey=myValue
jjs> java.lang.System.getProperty("myKey")
myValue
jjs>
-doe
--dump-on-error
Provides a full stack trace when an error occurs. By
default, only a brief error message is printed.
-fv
--fullversion
Prints the full Nashorn version string.
-fx
Launches the script as a JavaFX application.
-h
-help
Prints the list of options and their descriptions.
--language=[es5]
Specifies the ECMAScript language version. The default
version is ES5.
-ot
--optimistic-types=[true|false]
Enables or disables optimistic type assumptions with
deoptimizing recompilation. Running with optimistic types will yield higher
final speed, but may increase warmup time.
-scripting
Enables shell scripting features.
-strict
Enables strict mode, which enforces stronger adherence to
the standard (ECMAScript Edition 5.1), making it easier to detect common
coding errors.
-t=zone
-timezone=zone
Sets the specified time zone for script execution. It
overrides the time zone set in the OS and used by the Date
object.
-v
-version
Prints the Nashorn version string.
EXAMPLES¶
Example 1 Running a Script with Nashorn
jjs script.js
Example 2 Running Nashorn in Interactive Mode
>> jjs
jjs> println("Hello, World!")
Hello, World!
jjs> quit()
>>
Example 3 Passing Arguments to Nashorn
>> jjs -- a b c
jjs> arguments.join(", ")
a, b, c
jjs>
SEE ALSO¶
jrunscript
| 03 March 2015 | JDK 8 |