java.util.TreeMap#descendingMap ( )源码实例Demo

public static Map<Integer, Comment> getCommentsFromElements(Elements elements) {
    TreeMap<Integer, Comment> comments = new TreeMap<>();

    Elements replyItems = elements.select("div.reply-item");

    for (Element replyItem : replyItems) {
        Comment comment = getCommentFromElement(replyItem);
        comments.put(comment.getMeta().getFloor(), comment);
    }

    if (PrefsUtil.getBoolean(App.getInstance(), ConstantUtil.KEY_COMMENTS_ORDER_DESC, false)) {
        return comments.descendingMap();
    } else {
        return comments;
    }
}
 

public Map<String, String> getAppDetails() {
  TreeMap<String, String> details = new TreeMap<>();
  for (Pair pair : appDetails) {
    details.put(pair.getKey(), pair.getVal());
  }
  return details.descendingMap();
}
 

/**
 * Returns a new map from Integers -5 to -1 to Strings "A"-"E".
 */
private static NavigableMap dmap5() {
    TreeMap map = new TreeMap();
    assertTrue(map.isEmpty());
    map.put(m1, "A");
    map.put(m5, "E");
    map.put(m3, "C");
    map.put(m2, "B");
    map.put(m4, "D");
    assertFalse(map.isEmpty());
    assertEquals(5, map.size());
    return map.descendingMap();
}
 

public void testDescendingMapSerialization() {
    // Updated golden value since we have a different serialVersionUID in OpenJDK.
    String s = "aced0005737200226a6176612e7574696c2e547265654d61702444657363656e6"
            + "4696e675375624d61700cab946d1f0f9d0c0200014c001172657665727365436f6"
            + "d70617261746f727400164c6a6176612f7574696c2f436f6d70617261746f723b7"
            + "87200216a6176612e7574696c2e547265654d6170244e6176696761626c6553756"
            + "24d617026617d4eacdd59330200075a000966726f6d53746172745a000b6869496"
            + "e636c75736976655a000b6c6f496e636c75736976655a0005746f456e644c00026"
            + "8697400124c6a6176612f6c616e672f4f626a6563743b4c00026c6f71007e00034"
            + "c00016d7400134c6a6176612f7574696c2f547265654d61703b787001010101707"
            + "0737200116a6176612e7574696c2e547265654d61700cc1f63e2d256ae60300014"
            + "c000a636f6d70617261746f7271007e000178707372002a6a6176612e6c616e672"
            + "e537472696e672443617365496e73656e736974697665436f6d70617261746f727"
            + "7035c7d5c50e5ce02000078707704000000027400016171007e000a74000162710"
            + "07e000b78737200286a6176612e7574696c2e436f6c6c656374696f6e732452657"
            + "665727365436f6d70617261746f7232000003fa6c354d510200014c0003636d707"
            + "1007e0001787071007e0009";
    TreeMap<String, String> map = new TreeMap<String, String>(
            String.CASE_INSENSITIVE_ORDER);
    map.put("a", "a");
    map.put("b", "b");
    NavigableMap<String, String> descendingMap = map.descendingMap();
    new SerializationTester<NavigableMap<String, String>>(descendingMap, s) {
        @Override protected void verify(NavigableMap<String, String> deserialized) {
            assertEquals("b", deserialized.navigableKeySet().first());
        }
    }.test();
}
 

/**
 * Returns a new map from Integers -5 to -1 to Strings "A"-"E".
 */
private static NavigableMap dmap5() {
    TreeMap map = new TreeMap();
    assertTrue(map.isEmpty());
    map.put(m1, "A");
    map.put(m5, "E");
    map.put(m3, "C");
    map.put(m2, "B");
    map.put(m4, "D");
    assertFalse(map.isEmpty());
    assertEquals(5, map.size());
    return map.descendingMap();
}
 

public static Map PlayerModelUtils_onGetDefaultResonatorToDeploy(TreeMap map) {
    return Config.deployHighest ? map.descendingMap() : map;
}