override equals and hash code

[mickey0]

Hello,
my situation is this below; not sure about what override; I guess I must override 'Point'; In general, do I need to override Object1 as well?

class Figure {
  public Set<Point> points = new HashSet<Point>();
}

class Point {
  String name;
  public List<Object1> coll = new ArrayList<Object1>();
}

class Object1  {
    String type;
    String code;
}

Moreover: in my case two points are equal if and only if they have just the same 'name'; So I suppose that can I cut something of the stuff that Eclipse generates automatically; but do I still need to override hashCode? (even I just need to compare 'name')?
thanks,

[Oralloy]

Mickey,

You really should override hashCode, yes.

Especially if you're going to use the objects with the standard containers in java.util. These containers use the hashcode for a fair number of things.

If you want, you can cheap out and just return zero for all objects. This will assure that your objects will work correctly --- at the expense of serious performance degradation when using any of the containers which uses hashing.

Hopefully that makes a little sense.