Java EnumMap - hashCode() Method
The java.util.EnumMap.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.
Syntax
public int hashCode()
Parameters
No parameter is required.
Return Value
Returns the hash code value for this map.
Exception
NA.
Example:
In the example below, the java.util.EnumMap.hashCode() method returns the hash code value for the given EnumMap.
import java.util.*;
public class MyClass {
//creating an enum
public enum weekday{
MON, TUE, WED, THU, FRI
}
public static void main(String[] args) {
//creating EnumMaps
EnumMap<weekday,Integer> MyMap =
new EnumMap<weekday,Integer>(weekday.class);
//associate values in MyMap
MyMap.put(weekday.MON, 1);
MyMap.put(weekday.TUE, 2);
MyMap.put(weekday.WED, 3);
MyMap.put(weekday.THU, 4);
MyMap.put(weekday.FRI, 5);
//printing MyMap
System.out.println("MyMap contains: " + MyMap);
//print hashcode of MyMap
System.out.print("Hash Code of MyMap is: ");
System.out.print(MyMap.hashCode());
}
}
The output of the above code will be:
MyMap contains: {MON=1, TUE=2, WED=3, THU=4, FRI=5}
Hash Code of MyMap is: -1763058631
❮ Java.util - EnumMap
