I am using Netbeans 6.7. I had first installed Java 1.5 before installing Netbeans. When i installed Netbeans it took Java 1.5 as the default version. Then i installed Java 1.6 on my machine. I need to change the default JDK of my netbeans to 1.6 not only to a specific project but to the whole Netbeans application.
In my Windows 7 box I found netbeans.conf in <Drive>:\<Program Files folder>\<NetBeans installation folder>\etc . Thanks all.
open etc folder in netbeans folder then edit the netbeans.conf with notepad and you will find a line like this :
Default location of JDK, can be overridden by using --jdkhome :
netbeans_jdkhome="G:\Program Files\Java\jdk1.6.0_13"
here you can set your jdk version.
Fix this by moving my jdk folder to other disk
on Fedora it is currently impossible to set a new jdk-HOME to some sdk. They designed it such that it will always break. Try --jdkhome [whatever] but in all likelihood it will break and show some cryptic nonsensical error message as usual.
For anyone on Mac OS X, you can find netbeans.conf here:
/Applications/NetBeans/NetBeans <version>.app/Contents/Resources/NetBeans/etc/netbeans.conf
In case anyone needs to know :)
Source: Stackoverflow.com