public final class LockingTree
LockingTree(IntArray parent)
final Boolean
lock(Integer num, Integer user)
unlock(Integer num, Integer user)
upgrade(Integer num, Integer user)
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
final Boolean lock(Integer num, Integer user)
final Boolean unlock(Integer num, Integer user)
final Boolean upgrade(Integer num, Integer user)