Eclipse has refactoring support for generics (i.e. refactoring raw types to parameterized types and all 
dependencies)... this is taken from their help:

=== BEGIN ECLIPSE HELP ===
Infer Generic Type Arguments

Replaces raw type occurrences of generic types by parameterized types after identifying all places where this 
replacement is possible. 
Available: Projects, packages, and types 
Options: 'Assume clone() returns an instance of the receiver type'. Well-behaved classes generally respect this rule, 
but if you know that your code violates it, uncheck the box. 

'Leave unconstrained type arguments raw (rather than inferring <?>)'. If there are no constraints on the elements of 
e.g. ArrayList a, uncheck this box will cause Eclipse to still provide a wildcard parameter, replacing the reference 
with ArrayList<?>. 

=== END ECLIPSE HELP ===

Generic refactoring support would be a great feature for NetBeans.

-- Robert