Example usage for java.util IdentityHashMap IdentityHashMap

Introduction

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

Prototype

public IdentityHashMap()

Source Link

Document

Constructs a new, empty identity hash map with a default expected maximum size (21).

Usage

From source file:Main.java

public static void main(String[] argv) throws Exception {
    IdentityHashMap<Object, Object> objMap = new IdentityHashMap<Object, Object>();

    Object o1 = new Integer(123);
    Object o2 = new Integer(123);
    objMap.put(o1, "first");
    objMap.put(o2, "from java2s.com");

    Object v1 = objMap.get(o1);//from w  ww. j  a  v  a2 s .c o m
    System.out.println(v1);
    Object v2 = objMap.get(o2);
    System.out.println(v2);

    // check if key 3 exists
    boolean isavailable = objMap.containsKey(o1);

    System.out.println(isavailable);
}

From source file:Main.java

public static void main(String[] argv) throws Exception {
    IdentityHashMap<Object, Object> objMap = new IdentityHashMap<Object, Object>();

    Object o1 = new Integer(123);
    Object o2 = new Integer(123);
    objMap.put(o1, "first");
    objMap.put(o2, "from java2s.com");

    Object v1 = objMap.get(o1);//w  w w  .j  a v  a 2s .c  o m
    System.out.println(v1);
    Object v2 = objMap.get(o2);
    System.out.println(v2);

    objMap.clear();

    System.out.println("Map content after clear: " + objMap);

}

From source file:Main.java

public static void main(String[] argv) throws Exception {
    IdentityHashMap<Object, Object> objMap = new IdentityHashMap<Object, Object>();

    Object o1 = new Integer(123);
    Object o2 = new Integer(123);
    objMap.put(o1, "first");
    objMap.put(o2, "from java2s.com");

    Object v1 = objMap.get(o1);//from   www  .  j  av a2s.c o m
    System.out.println(v1);
    Object v2 = objMap.get(o2);
    System.out.println(v2);

    // clone the map
    IdentityHashMap ihmapclone = (IdentityHashMap) objMap.clone();

    System.out.println("Cloned map content: " + ihmapclone);

}

From source file:Main.java

public static void main(String[] argv) throws Exception {
    IdentityHashMap<Object, Object> objMap = new IdentityHashMap<Object, Object>();

    Object o1 = new Integer(123);
    Object o2 = new Integer(123);
    objMap.put(o1, "first");
    objMap.put(o2, "from java2s.com");

    Object v1 = objMap.get(o1);/*from   ww w  .j a  v  a 2s  .com*/
    System.out.println(v1);
    Object v2 = objMap.get(o2);
    System.out.println(v2);

    // create a set view
    Set<Object> nset = objMap.keySet();

    System.out.println("Set view is: " + nset);
}

From source file:Main.java

public static void main(String[] argv) throws Exception {
    IdentityHashMap<Object, Object> objMap = new IdentityHashMap<Object, Object>();

    Object o1 = new Integer(123);
    Object o2 = new Integer(123);
    objMap.put(o1, "first");
    objMap.put(o2, "from java2s.com");

    Object v1 = objMap.get(o1);/*from w w w  .  ja  v a 2s.c  o  m*/
    System.out.println(v1);
    Object v2 = objMap.get(o2);
    System.out.println(v2);

    System.out.println("Value at key '2' is: " + objMap.get(o1));
}

From source file:Main.java

public static void main(String[] argv) throws Exception {
    IdentityHashMap<Object, Object> objMap = new IdentityHashMap<Object, Object>();

    Object o1 = new Integer(123);
    Object o2 = new Integer(123);
    objMap.put(o1, "first");
    objMap.put(o2, "from java2s.com");

    Object v1 = objMap.get(o1);/*from   ww  w.j a v a  2  s. c o m*/
    System.out.println(v1);
    Object v2 = objMap.get(o2);
    System.out.println(v2);

    Map<Object, Object> objMap1 = new IdentityHashMap<Object, Object>();

    System.out.println(objMap1.equals(objMap));
}

From source file:Main.java

public static void main(String[] argv) throws Exception {
    IdentityHashMap<Object, Object> objMap = new IdentityHashMap<Object, Object>();

    Object o1 = new Integer(123);
    Object o2 = new Integer(123);
    objMap.put(o1, "first");
    objMap.put(o2, "from java2s.com");

    Object v1 = objMap.get(o1);/*w w  w  .  j  a  v a2  s . co m*/
    System.out.println(v1);
    Object v2 = objMap.get(o2);
    System.out.println(v2);

    // create entry set from the map
    Set<Entry<Object, Object>> enset = objMap.entrySet();

    System.out.println("Set view of the map: " + enset);
}

From source file:Main.java

public static <K, V> IdentityHashMap<K, V> getIdentityHashMap() {
    return new IdentityHashMap<K, V>();
}

From source file:Main.java

public static <K, V> IdentityHashMap<K, V> createIdentityHashMap() {
    return new IdentityHashMap<K, V>();
}

From source file:Main.java

public static <K, V> Map<K, V> makeIdentityMap() {
    return new IdentityHashMap<K, V>();
}