- path
- the path name of the preference node to query.
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Type Reason Java.Lang.IllegalStateException if this node has been removed and the path is not an empty string. Java.Lang.IllegalArgumentException if the path name is invalid. Java.Lang.NullPointerException if the given path is null. Java.Util.Prefs.BackingStoreException if the backing store is unavailable or causes an operation failure.
Returns whether the preference node with the given path name exists. The path is treated as relative to this node if it doesn't start with a slash, otherwise it is treated as an absolute path.
Please note that if this node has been removed, an invocation of this node will throw an IllegalStateException unless the given path is an empty string, which will return false.