Example usage for java.util TreeMap TreeMap

Introduction

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

Prototype

public TreeMap(SortedMap<K, ? extends V> m)

Source Link

Document

Constructs a new tree map containing the same mappings and using the same ordering as the specified sorted map.

Usage

From source file:Main.java

public static void main(String[] args) {
    TreeMap<Integer, String> db = new TreeMap<Integer, String>(Collections.reverseOrder());
    db.put(1000, "1000");
    db.put(1011, "1011");
    db.put(1102, "1102");
    db.put(2023, "2023");
    db.put(2034, "2034");

    System.out.println(db);//from ww w .jav a2  s .  c  om
}

From source file:Main.java

public static void main(String[] args) {
    Map<Integer, String> map = new TreeMap<Integer, String>(new MyComparator());

    map.put(2, "v");
    map.put(3, "h");
    map.put(4, "e");
    map.put(1, "a");

    System.out.println(map);//from w w  w.j  a va  2  s . c  o  m
}

From source file:Main.java

public static void main(String[] args) {
    Map<String, String> oldMap = new HashMap<String, String>();
    oldMap.put("a", "1");
    oldMap.put("A", "2");

    Map<String, String> newMap = new TreeMap<String, String>(String.CASE_INSENSITIVE_ORDER);
    newMap.putAll(oldMap);/*  www  .  j  av a2 s  . c  om*/
    String value = newMap.get("a");
    System.out.println(value);
}

From source file:Main.java

public static void main(String[] a) {
    Map<String, String> yourMap = new HashMap<String, String>();
    yourMap.put("1", "one");
    yourMap.put("2", "two");
    yourMap.put("3", "three");

    Map<String, String> sortedMap = new TreeMap<String, String>(yourMap);

    System.out.println(sortedMap);
}

From source file:Main.java

public static void main(String[] args) {
    Comparator<String> keyComparator = Comparator.comparing(String::length)
            .thenComparing(String::compareToIgnoreCase);

    SortedMap<String, String> sMap = new TreeMap<>(keyComparator);
    sMap.put("CSS", "style");
    sMap.put("HTML", "mark up");
    sMap.put("Oracle", "database");
    sMap.put("XML", "data");

    SortedMap<String, String> subMap = sMap.subMap("CSS", "XML");
    System.out.println(subMap);/*from ww  w  .ja  v a2 s .c o  m*/

    // Get the first and last keys
    String firstKey = sMap.firstKey();
    String lastKey = sMap.lastKey();
    System.out.println("First Key:  " + firstKey);
    System.out.println("Last key:   " + lastKey);
}

From source file:Main.java

public static void main(String[] args) {
    HashMap<String, String> hm = new HashMap<String, String>();
    hm.put("4", "four");
    hm.put("3", "three");
    hm.put("1", "one");
    hm.put("2", "two");

    Map<String, String> treeMap = new TreeMap<String, String>(hm);
    System.out.println(treeMap);/*w w  w .java 2s .c o m*/
}

From source file:Main.java

public static void main(String[] args) {

    HashMap<String, Double> map = new HashMap<String, Double>();
    ValueComparator bvc = new ValueComparator(map);
    TreeMap<String, Double> sorted_map = new TreeMap<String, Double>(bvc);

    map.put("A", 9.0);
    map.put("B", 6.0);
    map.put("C", 7.0);
    map.put("D", 10.0);

    System.out.println("unsorted map: " + map);

    sorted_map.putAll(map);//from   w  w w .  j  av  a 2  s.c o  m

    System.out.println("results: " + sorted_map);
}

From source file:List.java

public static void main(String args[]) throws Exception {
    Properties p = System.getProperties();
    p.list(System.out);//www  . j ava 2  s.  c  o m
    FileOutputStream fos = new FileOutputStream("sys.out");
    p.store(fos, null);
    fos.close();
    Map map = new TreeMap(p);
    System.out.println(map);
}

From source file:Main.java

public static void main(String[] args) {
    TreeMap<Integer, String> db = new HashMap<Integer, String>();
    db.put(1000, "1000");
    db.put(1011, "1011");
    db.put(1102, "1102");
    db.put(2023, "2023");
    db.put(2034, "2034");

    TreeMap<Integer, String> db2 = new TreeMap<Integer, String>(db);

    System.out.println(db2);//from w  w w.j  a va2 s .c  o  m
}

From source file:Main.java

public static void main(String args[]) {
    Calendar now = Calendar.getInstance();
    Locale locale = Locale.getDefault();

    Map<String, Integer> names = now.getDisplayNames(Calendar.DAY_OF_WEEK, Calendar.LONG, locale);
    SortedMap<String, Integer> nav = new TreeMap<String, Integer>(names);
    System.out.printf("Whole list:%n%s%n", nav);
    System.out.printf("First key: %s\tFirst entry: %s%n", nav.firstKey(), nav.firstEntry());
}