程序代码：

public class TestThread implements Runnable {
    int b= 100;
   
    public synchronized void m1() throws Exception{
       
        b=1000;
                Thread.sleep(5000);
        System.out.println(b);
    }
       
    public void m2() throws Exception {
        Thread.sleep(2500);
        b=2000;
    }   
   
    public void run() {
        try {
            m1();
        }catch(Exception e) {
            e.printStackTrace();
        }
    }
   
    public static void main(String [] args) throws Exception{
        TestThread tt = new TestThread();
        Thread t = new Thread(tt);
        t.start();
        tt.m2();
        System.out.println(tt.b);
    }
}





关于怎么分析线程的执行过程不是很清楚~~头疼。。。。有谁能注释一下写清楚上面这个程序的执行过程