Java Collection Tutorial - Java IdentityHashMap.entrySet()


IdentityHashMap.entrySet() has the following syntax.

public Set <Map.Entry <K, V>> entrySet()


In the following code shows how to use IdentityHashMap.entrySet() method.

/*from  ww  w .ja  va2s.c  o m*/
import java.util.IdentityHashMap;
import java.util.Map;
import java.util.Map.Entry;
import java.util.Set;

public class Main {
  public static void main(String[] argv) throws Exception {
    Map<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");

    Object v1 = objMap.get(o1);
    Object v2 = objMap.get(o2);

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

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

The code above generates the following result.