src/share/classes/java/util/TreeSet.java
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/**
* @since 1.6
*/
public E pollFirst() {
Map.Entry<E,?> e = m.pollFirstEntry();
! return (e == null)? null : e.getKey();
}
/**
* @since 1.6
*/
public E pollLast() {
Map.Entry<E,?> e = m.pollLastEntry();
! return (e == null)? null : e.getKey();
}
/**
* Returns a shallow copy of this {@code TreeSet} instance. (The elements
* themselves are not cloned.)
--- 450,468 ----
/**
* @since 1.6
*/
public E pollFirst() {
Map.Entry<E,?> e = m.pollFirstEntry();
! return (e == null) ? null : e.getKey();
}
/**
* @since 1.6
*/
public E pollLast() {
Map.Entry<E,?> e = m.pollLastEntry();
! return (e == null) ? null : e.getKey();
}
/**
* Returns a shallow copy of this {@code TreeSet} instance. (The elements
* themselves are not cloned.)