Java.com

Download Help

Printable Version

What is the Java Deployment Toolkit?


This article applies to:
  • Platform(s): Windows 8, Windows 7, Vista, Windows XP, Windows 2000
  • Browser(s) Internet Explorer, Firefox
  • Java version(s): 6.0

This page describes the Java Deployment ToolKit (DT) features with these sections:
  • What does the Java Deployment Toolkit (DT) do?
  • Why I am not able to run the Java Uninstall tool and the Java verification applet?
  • Does the 'Java DT plug-in blocked' message means the Java plug-in is blocked?
  • What happens if the Java Deployment Toolkit plug-in is blocked?
  • Will my Java plug-in function if the Java DT plug-in is disabled?
  • Does deployJava.js work if the Java DT Toolkit plug-in is disabled?

What does the Java Deployment Toolkit (DT) do?
The Java DT is a very useful tool, used by Java applets and applications to help manage getting the right version of Java for a user’s system. For developers, it also provides a JavaScript interface. The interface automatically generates the HTML code that is required to deploy Rich Internet Applications (RIAs).

Why I am not able to run the Java Uninstall tool and the Java verification applet?
The Java Uninstall Tool and the Java verification applet uses the Java DT to do Java version detection on the user system. If Java DT is blocked by browser (like Firefox) than these applets will not run. In order to run these applets the user will have to permit Java DT to run in browsers.

Does the 'Java DT plug-in blocked' message means the Java plug-in is blocked?
No, blocking the Java DT plug-in does not mean the Java plug-in is blocked. The Java DT plug-in does the Java version detection on a user’s system. The Java plug-in enables the Java applets and applications to run within a browser on a user’s system.

What happens if the Java Deployment Toolkit plug-in is blocked?
By blocking the Java DT plug-in, the Java version detection mechanism is disabled. Therefore, when a user tries to launch a Java applet or application, that requires a specific Java version other than the active Java version on a user’s system, it will fail.

Will my Java plug-in function if the Java DT plug-in is disabled?
Yes, the Java plug-in will continue to work even if the Java DT plug-in is disabled.

Does deployJava.js work if the Java DT Toolkit plug-in is disabled?
Yes, deployJava.js contains some pure JavaScript functions, which will continue to work even if the Java DT Toolkit plug-in is disabled.



Find expert help on Java installation and setup

Select Language | About Java | Support | Developers
Privacy | Terms of Use | Trademarks | Disclaimer

Oracle