Ubuntu 10.10 Can not Select Checkbox in Netbeans 6.9

After installing new version of Netbeans IDE 6.9 on Ubuntu 10.10, I had problem to select installing particular plugins. There were no possibility to tick a checkbox.

Problem was because Java Platform (java-6-open-jdk) is not Compatible with Ubuntu 10.10.

I solved the problem by uninstalling the newest all dependencies of jdk. 

The solution is to install sun-java6-jdk like this:

sudo apt-get install sun-java6-jdk

Then you can install Netbeans on your Ubuntu.