Java Plug-in Software 1.3 FAQ

   
 
TM PLUG-IN 1.3 BASIC
INFORMATION FAQ
Java Plug-in Software Home Page
Documentation

 

        Basic Information
        Supported Features
        Version Information


Basic Information   back to top

Q: What is Java Plug-in Software?

A: Java Plug-in Software is a software product from Sun Microsystems, Inc. that allows enterprise web managers to direct Java applets and JavaBeans components on their intranet web pages to run using Sun's Java Runtime Environment (JRE).

Q: For whom is Java Plug-in Software intended?

A: Java Plug-in Software is designed for enterprise customers who wish to deploy Java 2 SDK, Standard Edition based applets on their intranet web pages, and support Microsoft Windows- and Solaris-based browsers in their enterprise.

Q: Is there documentation available for Java Plug-in Software?

A: To assist in your deployment of Java Plug-in Software, Sun has made available a variety of technical documentation. Documentation regarding the HTML specifications, using Java Plug-in Software in intranet environments, how proxy configuration works, how to script applets, and much more are available from the Java Plug-in Software documentation page.

Q: What features does Java Plug-in Software offer?

A: Java Plug-in Software delivers several key capabilities to enterprises using Internet Explorer or Netscape's Navigator on Win32 and Solaris desktops:

 

        Full Java 2 SDK, Standard Edition v 1.3 support
        Full Java Compatible support
        Future-ready architecture
        Free public download and easy install
        Free Java Plug-in Software HTML Converter


A complete list of the features of the Java Plug-in Software 1.3 HTML Converter are also available from the Java Plug-in Software documentation page.

Q: What is the advantage of downloading and using Java Plug-in Software rather than the browser's default Java virtual machine?

A: Using Java Plug-in Software allows enterprises to:

  1. Take full advantage of Java 2 SDK, Standard Edition v 1.3 functionality such as JavaBeans, JNI, and RMI today.
  2. Develop and deploy 100% Pure Java applets on Internet Explorer and Netscape Navigator browsers, and be assured that they will run reliably and consistently in both browsers.
  3. Be assured that they will receive support for the latest releases of Sun's Java 2 platform --including the high-performance Java HotSpot virtual machine--in Internet Explorer and Navigator as soon as Sun releases them.

Q: Is Java Plug-in Software 1.3 included in the Java 2 Software Development Kit (SDK), Standard Edition v 1.3?

A: Yes, new in this release is the inclusion Java Plug-in Software 1.3 as part of the Java 2 Runtime Environment, Standard Edition (JRE) 1.3 for Microsoft Windows Production Release. In turn, JRE 1.3 is included as an optional installation of the Java 2 SDK, Standard Edition v 1.3 Microsoft Windows Production Release.

Q: Where is Java Plug-in Software for Solaris Production Release?

A: In an effort to better serve the Solaris community, Sun Microsystems offers a tuned and supported version of Netscape Navigator and Java Plug-in Software for Solaris. Follow this link for more information and downloading: http://www.sun.com/solaris/netscape

Q: Does Java Plug-in Software work on platforms other than Microsoft Windows or Solaris (for example, Mac OS, AIX, Linux, HP-UX, etc.) versions of IE or Navigator?

A: Sun has made Java Plug-in Software available for porting to all operating system providers. For information about support for Java Plug-in Software on other operating systems, please contact the operating system provider.

Q: What information should I provide when reporting a bug to http://bugreport.sun.com/bugreport/index.jsp

A: When reporting bugs against Java Plug-in Software, always include the following information:

  1. Operating system, including version number
  2. Web browser, including version number
  3. Complete output of the Java Console window
  4. Network configuration information--proxy, special intranet environment, etc.
  5. Complete description of the failure/problem encountered. Please delineate the steps taken to reproduce the problem, one-by-one.

Supported Features   back to top  

Q: Does Java Plug-in Software offer support for all the features in Java 2 SDK, Standard Edition v 1.3?

A: Yes. Java Plug-in Software uses the same JRE that users can download from Sun's web site today (see here) .

Q: Is Java Plug-in Software fully compliant with the JCK (Java Compatibility Kit) test suite for Java 2 SDK, Standard Edition v 1.3?

A: The 1.3 release of Java Plug-in Software is fully compliant with the JCK test suite for Java 2 SDK, Standard Edition v 1.3, including the RMI and JNI tests.

Q: Does Java Plug-in Software provide support for Netscape Navigator? 

A: Yes. Java Plug-in Software supports Netscape Navigator 3.0 and later on Windows 95 and 98, Windows NT 4.0, and version 2.6 and later of the Solaris operating environment.

Q: Which Java 2 SDK, Standard Edition v 1.3 software features does Netscape not support?

A: There are several, including support for multiple JAR files and not all thread methods are implemented. Netscape has provided further information on known incompatibilities in their JDK 1.1 patch for Communicator at http://developer.netscape.com/.

Q: Does Java Plug-in Software support scripting? 

A: Java Plug-in Software supports scripting of applets in Internet Explorer. However, such scripting is not available when using Java Plug-in Software in Navigator. Because of limitations in Netscape's plug-in API, scripting cannot be supported directly (through LiveConnect) in Navigator. We are working closely with Netscape to address this issue in a future release of Navigator.

Q: Does Java Plug-in Software support signed applets?

A: Yes, Java Plug-in Software supports standard Java 2 SDK, Standard Edition v 1.3 signed JARs and applets signed using Netscape signing tools. See the Java Plug-in Software documentation for more details.

Q: Does Java Plug-in Software support JNI?

A: Yes, Java Plug-in Software supports the Java Native Method Interface (JNI). See JNI and Java Plug-in Software for more details.

Please note that an applet must be signed to have permission to use JNI.

Q: Does Java Plug-in Software automatically recognize and use the proxy server configuration that the browser was using?

A: Yes, Java Plug-in Software automatically recognizes the Internet settings in your browser when it starts. It means that it can go over the firewalls/proxies as long as the settings in your browser are correct.

Q: Does Java Plug-in Software support proxy-bypass list?

A: Yes, the 1.3 release of Java Plug-in Software supports the proxy-bypass list.

Q: Does Java Plug-in Software support auto-proxy-configuration in the browser?

A: Yes, the 1.3 release of Java Plug-in Software supports auto-proxy-configuration for both Internet Explorer and Navigator.

Q: What protocol does Java Plug-in Software support over the proxy?

A: HTTP, HTTPS, FTP, and Gopher are supported in the 1.3 release of Java Plug-in Software.

Q: Does Java Plug-in Software support SSL?

A: Java Plug-in Software 1.3 provides HTTPS support but it does not provide direct SSL support.

Q: Is there a way to pre-load Java Plug-in Software during the browser startup?

A: Internet Explorer and Netscape Navigator do not have mechanisms to support pre-loading Java Plug-in Software during startup. You can work around this limitation by providing your own startup page that launches a dummy applet using Java Plug-in Software.

Q: Can I set up Java Plug-in Software to download from an intranet web server (behind a firewall), rather than downloading it from Sun's web site? 

A: Yes. For more information, see the Guide to Using Java Plug-in Software in Intranet Environments and the Java Plug-in Software documentation page.

Q: How can I open the Java Plug-in Control Panel on Microsoft Windows? 

A: On the Start menu, choose Start-->Settings-->Control Panel, then double click on the Duke icon labeled "Java Plug-in".

Version Information   back to top

Q: How can I tell what version of Java Plug-in Software has been installed?

A: There are a couple of ways:

  • Check the version number in C:\Windows\Downloaded Program Files\Java Runtime Environment. If the version number is 1,3,0,0, it is Java Plug-in Software 1.3. Otherwise, it is Java Plug-in Software 1.1 or 1.2 x.
  • Open Netscape Navigator. Go to the Help->About Plugins menu. Check all the MIME types in NPJava11.dll and NPJava32.dll. If the following exist:
    • "application/x-java-applet;version=1.3", you are using Java Plug-in Software 1.3
    • "application/x-java-applet;version=1.2", you are using Java Plug-in Software 1.2
    • "application/x-java-applet;version=1.1.2", you are using Java Plug-in Software 1.1.2
    • "application/x-java-applet;version=1.1.1", you are using Java Plug-in Software 1.1.1
    • "application/x-java-applet;version=1.1", you are using Java Plug-in Software 1.1

Q: Can different versions of Java Plug-in Software co-exist on the same system?

A: No. Java Plug-in Software for Internet Explorer shares the same unique identifier (CLSID in Internet Explorer, mime-type in Netscape) between different versions. As a result, installing different versions of Java Plug-in Software on the same machine may result in one version being overwritten.

We strongly recommend that users uninstall previous versions of Java Plug-in Software before installing Java Plug-in Software 1.3.

Notice that installing Java Plug-in Software 1.1. x after installing Java Plug-in Software 1.3 on the same machine is not supported.

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