以下代码中线程什么时候休眠?

When does a thread sleeps in the following code?

1- package demotest;
2- public class thread_example1 implements Runnable {
3- @Override
4- public void run() {
5- }
6- public static void main(String[] args) {
7-     Thread guruthread1 = new Thread();
8-     guruthread1.start();
9-     try {
10-         guruthread1.sleep(1000);
11-     }   catch (InterruptedException e) {
12-     // TODO Auto-generated catch block
13-         e.printStackTrace();
14-     }
15-     guruthread1.setPriority(1);
16-     int gurupriority = guruthread1.getPriority();
17-     System.out.println(gurupriority);
18-     System.out.println("Thread Running");
19-     Process proc = rt.exec("mspaint");
20-     Thread.sleep(5000);
21-     proc.destroy();
22- }
23- } 

第 7 行和第 20 行有什么区别?在这两种情况下线程都会暂停吗?他们做我的意思相同的任务吗?

I have this schedule :
Operation                          Line Number
Execution Paused                   10 and 20
Start Execution                    8
Closing Child Process              21
Thread Creation                    7
Execution of Child Process         19
Adjusting Priority                 15
Reading Priority                   16

还有更多的线路吗?例如,在执行暂停时,我们有 2 行。其他操作是否也不止一行?

另外,我的回答是否正确。

guruthread1.sleep() 和 Thread.sleep() 都在这里做同样的事情——它们暂停了主线程。 guruthread1.sleep() 是一种误导性的调用,因为 sleep() 是 class Thread

的静态方法