“What has happened to Chris is just not fair, but hanging on to it just won't help,” he said.
He described his son as mature beyond his years, and said he had been planning a future with his girlfriend of four years.
Dozens of members of Lane's former Essendon Baseball Club, dressed in dark suits, lined the street outside the church in a guard of honor, applauding as a hearse carried their friend away.
The tragedy has become a major media story in Australia, where guns and drive-by shootings are far less prevalent than they are in the United States.
Lane moved to Oklahoma to play baseball. He would have been a senior at East Central University in Ada and hoped to enter the real estate business.