class Computation extends Thread {
private int num；
private boolean isComplete；
private int result；
public Computation（int num） { this.num = num； }
public synchronized void run（） {
result = num * 2；
isComplete = true；
notify（）；
}
public synchronized int getResult（） {
while （!isComplete） {
try {
wait（）；
} catch （InterruptedException e） { }
}
return result；
}
public static void main（String[] args） {
Computation[] computations = new Computation [4]；
for （int i = 0； i < computations.length； i++） {
computations[i] = new Computation（i）；
computations[i] .start（）；
}
for （Computation c ： computations）
System.out.print（c.getResult（） +“ “）；
}
}
What is the result？（）
A . The code will deadlock.
B . The code may run with no output.
C . An exception is thrown at runtime.
D . The code may run with output “0 6”.
E . The code may run with output “2 0 6 4‟.
F . The code may ruin with output “0 2 4 6”.
参考答案与解析：
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