What is the canonical way to include the Applet?
I have tried,
Switch on Browsers in JS.
http://download.oracle.com/javase/1.5.0/docs/guide/plugin/developer_guide/using_tags.html#javascript
This breaks in Safari 5.0.1 on Leopard. (It worked on Safari on Snow leopard.)
Since we are not supporting old brosers, I assumed I could just use <object> tag, but apparently FF wont respect that.
What is the canonical way to do this?
The applet tag seems like a reasonable compromise, but I've migrated almost entirely to Java Web Start.
Addendum: A passerby notes,
JWS is a technology for launching desktop apps.
From the Java SE 6u10 release notes: "The next-generation Java Plug-In technology…provides support for launching applets directly from JNLP files."
Related
Is there's any java embedded web browser(free) that support applet running ?
I don't mind if its use some native libraries.
Currently ,I already tried javafx web view and DJnativeswing and they dont detect java(doesn't support applet).
Most of the modern browsers (Chrome v42+, Firefox 64 for Windows, Microsoft Edge, etc) have dropped support for NPAPI which is required for applets to run. Oracle is recommending that developers switch over to Java Web Start instead of using applet as the technology is fading. If you still need to use applets (eg. for school programming projects) you may need to uninstall your current browser(s) and install a legacy browser that still includes NPAPI.
Browser do not support applets nativly. That's because applets need a java runtime environment and an browser adapter to display the content in the browser. But if you install a jre it always will install an plugin into you browser(s) if not already present.
I'm now testing an applet application which required to work on JAVA 1.6 & 1.7
However i got a lot of difficulties with SAFARI & JAVA versions in-compatibility.
The test is for safari 5:
i install jre-1.6.0_11 --> the applet loaded normally
i install jre-1.6.0.25 --> the applet does not shown, no message for what's going on?
Updated
i install jre-1.7.0_11 --> the applet loaded normally
i install jre-1.7.0.25 --> the applet does not shown, no message for what's going on?
It's great if you can share your experience of this proble! Please tell if you have any solution that can detect if java is working or not?
I had similar problem and it was a nightmare. Apple has been very strict with plug-ins like Java Applets and Flash due to security issues (specially after several Zero-day-attacks occurred this year here is an example).
There are two things you can do to avoid your applet being blocked by the web browser:
Do not use javascript interactivity;
Do not use access local system/file;
You asked:
What should i do if my plugin is installed & enabled, but java is not working?
You could create a javascript function to check if your applet was loaded (yes, it contradicts what I just said...). Here is an example:
How to wait for a Java applet to finish loading on Safari?
Finally, did you check java security levels?
Cheers,
This is the question: can JWS app occupy requin on web page or represent entire web page and/or access browser state parameters?
A Java Web Start application runs independently of the browser. If you want a Java app to interact with the hosting browser, you have to make it an applet.
See the last link in the applet info. page.
JNLP Support in the Next Generation Java Plug-In Technology (introduced in Java SE 6 update 10) goes into further details of the new abilities of applets.
I high-lit the version since it is a recent ability, and I got the impression you wanted to support older browser/JRE combos. from your earlier question.
That page expands..
The next-generation Java Plug-In technology (hereafter the "Java Plug-In") provides support for launching applets directly from JNLP files. Previously, only Java Web Start utilized JNLP files, for the purpose of launching Java applications. Now Java applets can be described using the same meta-descriptor.
Also note that launching an embedded applet using JWS does not solve any of the problems that inherently come with embedding a rich client GUI into the lighter HTML GUI.
Focus problems between HTML elements and the applet or applets. Sun never bothered to try and define what should happen, which resulted in either the applet or HTML getting focus, and that was it (as far as the keyboard went).
Then there is the matter of the PLAF of the applet which mimics, but never quite matches that of the elements used for HTML forms. Especially if they are styled, and that brings me to..
Applets do not respond to CSS! Perhaps intuitively obvious to applet developers, but no end of frustration to the site designer.
Typically there is at least one version of one browser that cannot load the simplest of applets correctly. My 'favorite' of all these type of bugs was a FF version that reloaded applets if the user scrolled 'up'. I could go on, and on, and on..
How do I launch a URL in the user's default browser, in code from a Java Swing application?
There is this Netbeans library, but the jar dont seem to contain the classes mentioned in the example.
And there seems to be a number of old bespoke examples around.
But are there any killer solutions?
If you're running on JDK 1.6, you java.awt.Desktop.
Desktop.getDesktop().browse(new java.net.URI("www.google.com"));
If running on an earlier JDK, I believe that you can download the JDIC library. Or hack something together by spawning processes.
To expand upon kdgregory's answer, the The Java Desktop API, available from Java 6, provides integration with the desktop with functionality such as launching default web browsers and mail clients.
Launching a web browser can be achieved by using the Desktop.browse method.
For example, launching http://stackoverflow.com can be acheived by the following:
Desktop.getDesktop().browse(new URI("http://stackoverflow.com"));
More information:
Using the Desktop API in Java SE 6
How to Integrate with the Desktop Class
You can look at BrowserLauncher, although the latest version of the JDK are trying to make that obsolete.
Is JavaFX technology for building rich internet applications (RIA) a direct replacement for Java Applets?
No, JavaFX is not a replacement for applets. In fact, the idea is that you write applets that use JavaFX to things like what you can do with Adobe Flash or Microsoft Silverlight.
So rather than replace applets, it's expected that JavaFX might make applets popular again.
edit (08/15/2019) my answer above is 10 years old - things have changed. Applets are not supported anymore; Oracle does not provide a Java browser plug-in that can run applets with current versions of Java. Don't write code that uses applets anymore.