[ BUILD # : 200709270000 ]
[ JDK VERSION : 1.5.* ]

If you use the "Insert code"-feature to generate your equals() and
hashCode() methods it uses the corresponding member functions of the
array to compare the arrays or to compute their hash code
respectively.

I personally think it would be better if java.util.Arrays.equals()
and java.util.Arrays.hashCode() were used or at least could be chosen
as an option from the code generation popup.

I.e.:
hash = 97 * hash + Arrays.hashCode(this.a);

instead of:
hash = 97 * hash + (this.a == null ? 0 : a.hashCode());