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");

    // getting higher entry for key 4          
    System.out.println("Checking values of the map");
    System.out.println("Value is: " + treemap.higherEntry(4));
}

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");

    // getting higher key for key 4          
    System.out.println("Checking values of the map");
    System.out.println("Value is: " + treemap.higherKey(3));
}

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");

    // getting the value with greatest key      
    System.out.println("Checking last entry");
    System.out.println("Value is: " + treemap.lastEntry());
}

From source file:Main.java

public static void main(String[] a) {
    TreeMap<String, String> map = new TreeMap<String, String>();
    map.put("key1", "value1");
    map.put("key2", "value2");
    map.put("key3", "value3");

    if (!map.isEmpty()) {
        String last = map.lastKey();
        boolean first = true;
        do {//ww w  .j  a  v  a  2s .  c om
            if (!first) {
                System.out.print(", ");
            }
            System.out.print(last);
            last = map.headMap(last, true).lastKey();
            first = false;
        } while (last != map.firstKey());
        System.out.println();
    }
}

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");

    // polling first entry
    System.out.println("Value before poll: " + treemap);
    System.out.println("Value returned: " + treemap.pollFirstEntry());
    System.out.println("Value after poll: " + treemap);
}

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");

    // polling last entry
    System.out.println("Value before poll: " + treemap);
    System.out.println("Value returned: " + treemap.pollLastEntry());
    System.out.println("Value after poll: " + treemap);
}

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("Value before modification: " + treemap);

    // removing value at key 5
    System.out.println("Removed value: " + treemap.remove(5));

    System.out.println("Value after modification: " + treemap);
}

From source file:Main.java

public static void main(String[] args) {

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

    // cloning tree map
    System.out.println("Cloning tree map");
    treemapclone = (TreeMap) treemap.clone();

    System.out.println("Original map: " + treemap);
    System.out.println("Cloned map: " + treemapclone);
}

From source file:Main.java

public static void main(String[] args) {

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

    treemap_putall.put(1, "1");
    treemap_putall.put(2, "2");
    treemap_putall.put(7, "7");

    System.out.println("Value before modification: " + treemap);

    // Putting 2nd map in 1st map
    treemap.putAll(treemap_putall);/*w ww .j a  v a 2  s . c o m*/

    System.out.println("Value after modification: " + treemap);
}

From source file:Main.java

public static void main(String[] args) {
    TreeMap treeMap = new TreeMap();
    Map map = Collections.synchronizedMap(treeMap);
}