New to Java

Hi
Hope you can help, am getting below error when trying to compile my code:

init:
deps-jar:
Created dir: C:\Documents and Settings\andy mckeown\Desktop\TMA02 Download\TMA02Q2\build\classes
Compiling 1 source file to C:\Documents and Settings\andy mckeown\Desktop\TMA02 Download\TMA02Q2\build\classes
C:\Documents and Settings\andy mckeown\Desktop\TMA02 Download\TMA02Q2\src\tma02q2\ButtonPanel.java:27: generics are not supported in -source 1.4
(use -source 5 or higher to enable generics)
    private ArrayList<Integer> simonSequence; // Simon's sequence of numbered buttons
C:\Documents and Settings\andy mckeown\Desktop\TMA02 Download\TMA02Q2\src\tma02q2\ButtonPanel.java:46: for-each loops are not supported in -source 1.4
(use -source 5 or higher to enable for-each loops)
        for (JButton b: buttons)
2 errors
BUILD FAILED (total time: 0 seconds)

I am using netbeans 1.4 and have installed java 1.6.0_11 and have added it to the class path so netbeans seems to be using it any ideas what is wrong?

Thanks
Andy