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问题描述:

[多选] class Order implements Runnable { public void run(){ try { Thread.sleep (); } 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.prpost in
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