Start & Run

start和run方法的区别就是，start具体调用由底层去执行，而run还是由调用者去执行，run并不是异步

start

@Slf4j
public class Demo {
    public static void main(String[] args) throws ExecutionException, InterruptedException {
        log.info("main run..");
        new Thread(() -> log.info("thread run..")).start();
    }
}
//22:46:47.637 [main] INFO com.gao.Demo - main run..
//22:46:47.689 [Thread-0] INFO com.gao.Demo - thread run..

run

@Slf4j
public class Demo {
    public static void main(String[] args) throws ExecutionException, InterruptedException {
        log.info("main run..");
        new Thread(() -> log.info("thread run..")).run();
    }
}
//22:46:29.560 [main] INFO com.gao.Demo - main run..
//22:46:29.609 [main] INFO com.gao.Demo - thread run..