NetBeans 6.5 and Java 6u12 – A No-No!

I recently stumbled upon a problem within a NetBeans mobile project: The editor for the items within an application descriptor would no longer open. Instead a red light on NetBeans frame (all the way down and to the right) would indicate a NullPointer Exception 😦

It appears that the problem is related to running NetBeans 6.5 with Java 6 Update 12.

It appears that other areas and plug-ins might suffer from similar issues as at Do not use JDK 6u12. Use some previous JDK version. We are working on this and NetBeans throws NullPointerException when adding a server.

Update: This bug has now been fixed. Get NetBeans 6.5.1 now.


I don’t know who is the culprit, so just use Java 6 Update 11 (6u11) instead of 6u12:

Download and install Java 6u11 from Sun’s archives or directly from Archive: Download Java Platform Standard Edition (Java SE) 6 Update 11.

Change your NetBeans configuration (e.g. ) to use 6u11 instead of 6u12, e.g.:

# Default location of JDK, can be overridden by using --jdkhome <dir>:
netbeans_jdkhome="C:Program FilesJavajdk1.6.0_11"

About Reiner

Born 1954 in Ratisbon (Bavaria, Germany), in 1976 punched cards at Berlin Technical University, caught hacking one of its mainframes by Horst Zuse (son of Konrad Zuse), started studying computer science and soon was offered a job whithin their computer department doing systems programming for IBM VM/370. While studying, jobbed around Germany at various places doing all sorts of things, then returned to Berlin to work at SRZ (computer aided typesetting). Never finished my master degree, but chose to take up self-employed work (which didn't turn me rich nor famous). Now working for a mid-sized software company within a very promising department as head of server software development.
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