> 原文:[https://www . geesforgeks . org/sorted set-isempty-method-in-Java-with-examples/](https://www.geeksforgeeks.org/sortedset-isempty-method-in-java-with ...

I am writing a way to implement SortedSet in java. SortedSet have the properties of Set interface plus feature of sorting in ascending order. It is by default provides elements in ascending order. It ...

**返回值:**如果该方法成功地将集合的元素 *C* 追加到该集合中，则该方法返回**真**，否则返回假。 **注**:[sorted Set](https://www ...