Java IdentityHashMap - hashCode() Method
The java.util.IdentityHashMap.hashCode() method returns the hash code value for this map. The hash code of a map is defined to be the sum of the hash codes of each entry in the map's entrySet() view.
Syntax
public int hashCode()
Parameters
No parameter is required.
Return Value
Returns a hash code value for this map.
Exception
NA.
Example:
In the example below, the java.util.IdentityHashMap.hashCode() method returns the hash code value for the given identity hash map.
import java.util.*;
public class MyClass {
public static void main(String[] args) {
//creating a identity hash map
IdentityHashMap<Integer, String> MyMap = new IdentityHashMap<Integer, String>();
//populating the map
MyMap.put(101, "John");
MyMap.put(102, "Marry");
MyMap.put(103, "Kim");
MyMap.put(104, "Jo");
MyMap.put(105, "Sam");
//printing the map
System.out.println("MyMap contains: " + MyMap);
//printing hashcode of the map
System.out.print("Hash Code of MyMap is: ");
System.out.print(MyMap.hashCode());
}
}
The output of the above code will be:
MyMap contains: {105=Sam, 101=John, 102=Marry, 104=Jo, 103=Kim}
Hash Code of MyMap is: -1059188980
❮ Java.util - IdentityHashMap
