由于同步顺序,以下Java程序是否必须打印“num：1 m_i：2”

由于以下同步顺序,以下Java程序是否必须打印“num：1 m_i：2”.

http://java.sun.com/docs/books/jls/third_edition/html/memory.html#17.4.4

????启动线程的操作与其启动的线程中的第一个操作同步.

public class ThreadHappenBefore {
    static int num;
    int m_i;

    public static void main(String[] args) {
        final ThreadHappenBefore hb = new ThreadHappenBefore();
        num = 1;
            hb.m_i = 2;

        new Thread(new Runnable() {
            @Override
            public void run() {
                System.out.println("num:"+num);
                System.out.println("m_i:"+hb.m_i);
            }
        }).start();
    }
}