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现有: 1. class ThreadBoth extends Threaa implements Runnable { 2. 3.public void run() (System.out.print("hi"); } 4. 5.public static voicl main (String [] args) { 6.Thread tl=new ThreadBoth(): 7.Thread t2 = new Thread (tl): 8. tl.run(): 9. t2.run(): 10. } 11. } 结果为:A.
hi hi
B.
hi
C.
编译失败
D.
运行时异常被抛出
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