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Java Platform, Standard Edition Tools Reference
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# javaws

Starts Java Web Start.

## Synopsis

javaws [ run-options ] jnlp

javaws [ control-options ]

run-options

  Command-line `run-options`. The `run-options` can be in any order. See Run-Options.

jnlp

  Either the path of or the Uniform Resource Locator (URL) of the Java Network Launching Protocol (JNLP) file.

control-options

  Command-line `control-options`. The `control-options` can be in any order. See Control-Options.

## Description

Note: The `javaws` command is not available on Oracle Solaris.

The `javaws` command starts Java Web Start, which is the reference implementation of the JNLP. Java Web Start starts Java applications and applets hosted on a network.

If a JNLP file is specified, then the `javaws` command starts the Java application or applet specified in the JNLP file.

The `javaws` launcher has a set of options that are supported in the current release. However, the options may be removed in a future release.

## Run-Options

-offline

  Runs Java Web Start in offline mode.

-Xnosplash

  Does not display the initial splash screen.

-open arguments

  When specified, this option replaces the arguments in the JNLP file with `-open` `arguments`.

-print arguments

  When specified, this option replaces the arguments in the JNLP file with `-print` `arguments`.

-online

  Uses online mode. This is the default behavior.

-wait

  The `javaws` process does not exit until the application exits. This option does not function as described on Windows platforms.

-verbose

  Displays additional output.

-Joption

  Passes option to the Java Virtual Machine, where `option` is one of the options described on the reference page for the Java application launcher. For example, `-J-Xms48m` sets the startup memory to 48 MB. See java(1).

-system

  Runs the application from the system cache only.

## Control-Options

-viewer

  Shows the cache viewer in the Java Control Panel.

-clearcache

  Removes all non-installed applications from the cache.

-userConfig property-name

  Clears the specified deployment property.

-userConfig property-name property-value

  Sets the specified deployment property to the specified value.

-uninstall

  Removes all applications from the cache.

-uninstall jnlp

  Removes the application from the cache.

-print import-options jnlp

  Imports the application to the cache.

## Import-Options

-silent

  Imports silently (with no user interface).

-system

  Imports application to the system cache.

-codebase url

  Retrieves resources from the specified codebase.

-shortcut

  Installs shortcuts if the user allows a prompt. This option has no effect unless the `-silent` option is also used.

-association

  Installs associations if the user allows a prompt. This option has no effect unless the `-silent` option is also used.

Note: The command `javaws -shortcut -uninstall` removes both association as well as the implementation.

## Files

For information about the user and system cache and deployment.properties files, see Deployment Configuration File and Properties at
`http://docs.oracle.com/javase/8/docs/technotes/guides/jweb/jcp/properties.html`

## See Also

- Java Web Start at
  `http://docs.oracle.com/javase/8/docs/technotes/guides/javaws/index.html`

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