@Override public int hashCode() { final int prime = 31; int result = 1; result = prime * result + ((x == null) ? 0 : x.hashCode()); result = prime * result + ((y == null) ? 0 : y.hashCode()); return result; }
@Override public int hashCode() { return a.hashCode() + 31 * b.hashCode(); }
@Override public int hashCode() { int result = x != null ? x.hashCode() : 0; result = 31 * result + (y != null ? y.hashCode() : 0); return result; }