DelegatingVector's clone()

DelegatingVector.java

  @Override
  public Vector clone() {
    DelegatingVector r;
    try {
      r = (DelegatingVector) super.clone();
    } catch (CloneNotSupportedException e) {
      throw new RuntimeException("Clone not supported for DelegatingVector, shouldn't be possible");
    }
    // delegate points to original without this
    r.delegate = delegate.clone();
    return r;
  }