Example usage for java.util NavigableSet clear

Introduction

In this page you can find the example usage for java.util NavigableSet clear.

Prototype

void clear();

Source Link

Document

Removes all of the elements from this set (optional operation).

Usage

From source file:com.google.gwt.emultest.java.util.TreeSetTest.java

public void testDescendingSet() {
    NavigableSet<E> set = createNavigableSet();
    set.add(getKeys()[0]);/*from  ww w.  ja  va2 s  . c  om*/

    NavigableSet<E> descendingSet = set.descendingSet();
    _assertEquals(descendingSet, descendingSet);
    _assertEquals(set.descendingSet(), descendingSet);

    set.add(getKeys()[1]);
    set.add(getKeys()[2]);
    _assertEquals(reverseCollection(set), descendingSet);
    _assertEquals(set, descendingSet.descendingSet());

    set.remove(getKeys()[1]);
    _assertEquals(reverseCollection(set), descendingSet);

    descendingSet.add(getKeys()[0]);
    _assertEquals(reverseCollection(set), descendingSet);

    descendingSet.remove(getKeys()[1]);
    _assertEquals(reverseCollection(set), descendingSet);

    descendingSet.clear();
    assertEquals(0, descendingSet.size());
    _assertEquals(set, descendingSet);
}

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