Look for qualified this usages in the same class.

Examples:

    Positive example 1:
    /**
     * @author caikang
     * @date 2017/04/07
     */
    public class RandomInThread extends Thread {
        private Random random = new Random();
        @Override
        public void run() {
            long t = random.nextLong();
        }
    }
        ]]>