What is the competition method of javelin?

Olympic track and field events are usually divided into two groups, and those who pass the standard will go straight to the finals. If the number of athletes who meet the passing standards is less than 12, the insufficient number will be replenished according to the passing results. The order of the first three rounds from the final of the project is decided by drawing lots. After the first three rounds of the final, the top eight athletes will be selected for the final three rounds according to the results; The fourth and fifth rounds are sorted in reverse order according to the results of the first three rounds, and the sixth round is sorted in reverse order according to the results of the first five rounds, with the best results jumping (throwing) at the end.