多项选择题
class Order implements Runnable {
public void run () {
try { Thread.sleep (2000) ; } catch (Exception e)
System.out.print("in") ;
public static void main (String [] args) {
Thread t = new Thread (new Order ()) ;
t.start () ;
System.out.print ("pre ") ;
try { t.join () ; } catch (Exception e) { }
System.out.print ("post") ;
可产生哪两项结果?()
A. pre in post
B. pre in
C. in post pre
D. in pre post
E. pre post in