"Why do the java.awt libraries require a functional X Server?"

The Abstract Window Types libraries (AWT) are there to provide basic Windows-Type graphical facilities for a Java programmer to send graphics to the end user. The UNIX version of these libraries are specifically created to use the X Server to render these graphics. So, to answer the question in its simplest form: The java.awt libraries are actually wrapper classes to produce graphics based on the X Server operating environment. This means to produce graphics, such as PNG & JPEG files, run the awt libraries from an X Server environment.

One of IDAutomation's customers was able to use Sun JDK 1.4.1 on Linux in headless mode. IDAutomation’s Java Barcode Products have been modified to be compatible with headless operation as of April 2, 2003.

If an active Priority Support and Upgrade Subscription through RegNow is in effect, please contact IDAutomation with the order ID number to receive the updated download link.

If an active support agreement is in effect through IDAutomation's store, please go back to the store online and go to “My Account”. Enter the user name, which is the email address and the password that created at the time of order. Then when logging in, the invoice should appear on the screen and in the upper right hand corner, there will be a link to “My Downloads”. This will be the location to download the update.

To reactivate the Priority Support and Upgrade Subscription, please visit: http://www.idautomation.com/extended/about.html

See also:

• "Can't connect to X11 window server" or similar errors using Java Barcode Servlets.
• java.awt.HeadlessException at java.applet.Applet in headless mode
• Java Product Support Index

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