public class FutureTask<V> implements Future<V>, Runnable { public FutureTask(Callable<V> callable) {
if (callable == null)
throw new NullPointerException();
sync = new Sync(callable);
}
.......
}请问<V>是代表什么意思?
if (callable == null)
throw new NullPointerException();
sync = new Sync(callable);
}
.......
}请问<V>是代表什么意思?
解决方案 »
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