java - How to teach eclipse to generate compact equals() and hashCode() from the jdk 7 Objects class? -

some days ago switched java 7 within company - finally! jay \o/ found out objects class , astonished how short methods hashcode() , equals() realized, reducing lot of boylerplate code compared ones generated eclipse per default (alt+shift+s --> h).

i wondering if change default behaviour of eclipse generated hashcode() , equals()?

i'd love see this:

@override public int hashcode() {   return objects.hash(one, two, three, four/*, ...*/); } 

instead of this:

@override public int hashcode() {   final int prime = 31;   int result = 1;   result = prime * result + ((one == null) ? 0 : one.hashcode());   result = prime * result + ((two == null) ? 0 : two.hashcode());   result = prime * result + ((three == null) ? 0 : three.hashcode());   result = prime * result + ((four== null) ? 0 : four.hashcode());   // ...   return result; } 

the same goes equals(). this article got from.

any ideas how realize best?

in eclipse preferences go java > editor > templates.

in there can create new template. pattern like:

@override public int hashcode() {      return objects.hash(one, two, three, four/*, ...*/); } 

i'm not sure if there's variable enumerate fields however.

you might want @ some further explanations on these templates