Example usage for java.util TreeMap put

Introduction

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

Prototype

public V put(K key, V value)

Source Link

Document

Associates the specified value with the specified key in this map.

Usage

From source file:MainClass.java

public static void main(String[] a) {

    TreeMap map = new TreeMap();
    map.put("key1", "value1");
    map.put("key2", "value2");
    map.put("key3", "value3");

    Map map2 = map.headMap("key2");
    System.out.println(map2);/* ww w . j av  a  2  s  .com*/
}

From source file:Main.java

public static void main(String[] a) {

    TreeMap map = new TreeMap();
    map.put("key1", "value1");
    map.put("key2", "value2");
    map.put("key3", "value3");

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

From source file:MyComparator.java

public static void main(String[] args) {
    TreeMap tm = new TreeMap();
    tm.put(1, new Double(344.34));
    tm.put(0, new Double(123.22));
    tm.put(4, new Double(138.00));
    tm.put(2, new Double(919.22));
    tm.put(3, new Double(-119.08));

    List<Map.Entry> valueList = new ArrayList(tm.entrySet());
    Collections.sort(valueList, new MyComparator());

    Iterator<Map.Entry> iterator = valueList.iterator();
    while (iterator.hasNext()) {
        Map.Entry entry = iterator.next();
        System.out.println("Value: " + entry.getValue());
    }//w  w w  . jav  a  2 s.com
}

From source file:MainClass.java

public static void main(String args[]) {
    TreeMap map = new TreeMap();
    map.put("Virginia", "Richmond");
    map.put("Massachusetts", "Boston");
    map.put("New York", "Albany");
    map.put("Maryland", "Annapolis");

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

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("2", "Two");
    treeMap.put("3", "Three");

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

From source file:Main.java

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

    System.out.println("First key lower than 2034: " + db.lowerKey(2034));
}

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("2", "Two");
    treeMap.put("3", "Three");

    treeMap.clear();//from   ww  w .j  a v a 2  s.co  m
    System.out.println(treeMap.size());
}

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("2", "Two");
    treeMap.put("3", "Three");

    System.out.println(treeMap.containsValue("Three"));
}

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("2", "Two");
    treeMap.put("3", "Three");

    Object obj = treeMap.remove("2");
    System.out.println(obj + " Removed from TreeMap");
}

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("2", "Two");
    treeMap.put("3", "Three");
    treeMap.put("4", "Four");
    treeMap.put("5", "Five");

    System.out.println("Lowest key: " + treeMap.firstKey());
    System.out.println("Highest key: " + treeMap.lastKey());
}