leetcode-go/basis/concurrent/TestThread.java

public class TestThread {
    public static void main(String[] args) {
        MyThread thread = new MyThread();
        thread.start();
    }
}

class MyThread extends Thread {
    @Override
    public void run() {
        try {
            Thread.sleep(1000);
        } catch (Exception e) {
            e.printStackTrace();
        }
        System.out.println("Finished.");
    }
}