Is Java WebStart Deprecated?

Michael Nascimento misterm at
Mon Nov 6 10:31:48 UTC 2017

Hi Donald,

I've heard this argument before and it seems Oracle is not aware of
why enterprises use Java WebStart. It has *nothing* to do with a
central JRE, but actually with distributing and upgrading applications
automatically without using installers and requiring admin privileges,
especially in Windows environments. That's at least what I see here in
Brazil in several companies I've consulted for and what people tell me
after desktop-related talks.

Saying this could be replaced with a jlink generated image or an
installer is really ignoring how this is really dealt with by the Java
community and even why Java was a good pick for those desktop
applications - a WORA that doesn't require an installer with admin
rights and auto-upgrade with a differential download protocol is the
key factor for choosing JWS. And I see no replacement being provided
by the JDK or even in the roadmap.

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On Sun, Nov 5, 2017 at 6:40 PM, Donald smith <donald.smith at> wrote:
> The release notes are accurate.
> As we noted early in September [1]:
>> As client application development continues to shift from the old “plugin” world to modern deployment, the need for a standalone Java Runtime Environment (JRE) that is installed centrally, separately from Java applications has diminished.  Using the ‘jlink’ tool introduced with JDK 9 will make it even easier for application developers to package and deploy dedicated runtimes rather than relying on a pre-installed system JRE.  Oracle will begin transitioning from the standalone architecture later next year in what will be a multi-year effort.
>  - Don
> [1] -
>> On Nov 3, 2017, at 4:30 PM, August Nagro <augustnagro at> wrote:
>> The Java 9 Release Notes [1] include:
>> "Java Deployment Technologies are deprecated and will be removed in a
>> future release. Java Applet and WebStart functionality, including the
>> Applet API, The Java plug-in, the Java Applet Viewer, JNLP and Java Web
>> Start including the javaws tool are all deprecated in JDK 9 and will be
>> removed in a future release."
>> The bell has been ringing for Applets for some time, but I am surprised by
>> the inclusion of Java WebStart / JNLP. The technology is the recommended
>> migration path from applets [2], and provides some really enabling features
>> like os-agnostics shortcuts, icons, and the ability to auto-update in the
>> background.
>> The `appletlauncher` executable has a clear deprecation warning in Java 9,
>> but `javaws` has no such notice, leading me to believe there may be an
>> error. In any case, Java Web Start is a mature, useful technology that has
>> undoubtedly received large investment over the years. It's sudden removal
>> would be quite disappointing.
>> Regards,
>> August Nagro
>> [1]:
>> [2]:

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