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()

Source Link

Document

Constructs a new, empty tree map, using the natural ordering of its keys.

Usage

From source file:Main.java

public static void main(String[] args) {

    TreeMap<Integer, String> treemap = new TreeMap<Integer, String>();

    // populating tree map
    treemap.put(2, "two");
    treemap.put(1, "one");
    treemap.put(3, "three");
    treemap.put(6, "six");
    treemap.put(5, "from java2s.com");

    System.out.println("Ceiling key entry for 4: " + treemap.ceilingKey(4));
    System.out.println("Ceiling key entry for 5: " + treemap.ceilingKey(5));
    System.out.println("Ceiling key entry for 7: " + treemap.ceilingKey(7));
}

From source file:Main.java

public static void main(String[] args) {

    TreeMap<Integer, String> treemap = new TreeMap<Integer, String>();

    // populating tree map
    treemap.put(2, "two");
    treemap.put(1, "one");
    treemap.put(3, "three");
    treemap.put(6, "six");
    treemap.put(5, "from java2s.com");

    System.out.println("Getting a portion of the map");
    NavigableMap<Integer, String> treemapincl = treemap.subMap(1, true, 3, true);
    System.out.println("Sub map values: " + treemapincl);
}

From source file:Main.java

public static void main(String[] args) {

    TreeMap<Integer, String> treemap = new TreeMap<Integer, String>();
    TreeMap<Integer, String> treemaphead = new TreeMap<Integer, String>();

    // populating tree map
    treemap.put(2, "two");
    treemap.put(1, "one");
    treemap.put(3, "three");
    treemap.put(6, "six");
    treemap.put(5, "from java2s.com");

    // getting head map
    treemaphead = treemap.headMap(3);/*from w ww.  ja va2 s  .  c  o m*/

    System.out.println("Checking values of the sorted map");
    System.out.println("Value is: " + treemaphead);
}

From source file:Main.java

public static void main(String[] args) {

    TreeMap<Integer, String> treemap = new TreeMap<Integer, String>();

    // populating tree map
    treemap.put(2, "two");
    treemap.put(1, "one");
    treemap.put(3, "three");
    treemap.put(6, "six");
    treemap.put(5, "from java2s.com");

    // putting values in navigable set
    NavigableSet nset = treemap.descendingKeySet();

    System.out.println("Checking value");
    System.out.println("Navigable set values: " + nset);
}

From source file:Main.java

public static void main(String[] args) {

    TreeMap<Integer, String> treemap = new TreeMap<Integer, String>();

    // populating tree map
    treemap.put(2, "two");
    treemap.put(1, "one");
    treemap.put(3, "three");
    treemap.put(6, "six");
    treemap.put(5, "from java2s.com");

    // putting values in navigable map
    NavigableMap nmap = treemap.descendingMap();

    System.out.println("Checking value");
    System.out.println("Navigable map values: " + nmap);
}

From source file:Main.java

public static void main(String[] args) {

    TreeMap<Integer, String> treemap = new TreeMap<Integer, String>();
    TreeMap<Integer, String> treemapheadincl = new TreeMap<Integer, String>();

    // populating tree map
    treemap.put(2, "two");
    treemap.put(1, "one");
    treemap.put(3, "three");
    treemap.put(6, "six");
    treemap.put(5, "from java2s.com");

    // getting head map inclusive 3
    treemapheadincl = treemap.headMap(3, true);

    System.out.println("Checking values of the map");
    System.out.println("Value is: " + treemapheadincl);
}

From source file:Main.java

public static void main(String[] args) {

    TreeMap<Integer, String> treemap = new TreeMap<Integer, String>();

    // populating tree map
    treemap.put(2, "two");
    treemap.put(1, "one");
    treemap.put(3, "three");
    treemap.put(6, "six");
    treemap.put(5, "from java2s.com");

    System.out.println("Entries in the Map: " + treemap);

    // clearing the map
    System.out.println("Clearing the Map");
    treemap.clear();//from w w  w . j a  v a2s  .  c o  m

    System.out.println("Entries in the Map: " + treemap);
}

From source file:Freq.java

public static void main(String args[]) {
    Map m = new TreeMap();

    m.put("a Key", "a Value");
    m.put("Java2s", "www.java2s.com");

    System.out.println(m.size() + " keys detected:");
    System.out.println(m);//w  w  w.j a  v  a 2 s  .  c  om
}

From source file:Main.java

public static void main(String[] args) {
    TreeMap<String, String> treeMap = new TreeMap<String, String>();
    treeMap.put("1", "One");
    treeMap.put("3", "Three");
    treeMap.put("2", "Two");

    Set st = treeMap.keySet();//w  w  w.j ava2s  .co m
    Iterator itr = st.iterator();
    while (itr.hasNext()) {
        System.out.println(itr.next());
    }
    st.remove("1");

    System.out.println(treeMap.containsKey("1"));
}

From source file:Main.java

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

    int[] array = new int[3];
    array[0] = 0;/*from  w  w w . ja  va 2s.c om*/
    array[1] = 1;
    array[2] = 2;
    map.put("array", array);

    Iterator<String> iter = map.keySet().iterator();

    while (iter.hasNext()) {
        String arrayName = iter.next();
        array = map.get(arrayName);
        System.out.print(arrayName + ":");
        for (int i = 0; i < array.length; i++) {
            System.out.print(array[i]);
        }
    }
}