Java EnumMap - equals() Method
The java.util.EnumMap.equals() method is used to compare the specified object with this map for equality. The method returns true if the given object is also a map and the two maps represent the same mappings.
Syntax
public boolean equals(Object obj)
Parameters
obj |
Specify the object to be compared for equality with this map. |
Return Value
Returns true if the specified object is equal to this map, false otherwise.
Exception
NA.
Example:
In the example below, the java.util.EnumMap.equals() method is used to compare EnumMaps for equality.
import java.util.*;
public class MyClass {
//creating an enum
public enum weekday{
RED, BLUE, GREEN
}
public static void main(String[] args) {
//creating EnumMaps
EnumMap<weekday,Integer> Map1 =
new EnumMap<weekday,Integer>(weekday.class);
EnumMap<weekday,Integer> Map2 =
new EnumMap<weekday,Integer>(weekday.class);
EnumMap<weekday,Integer> Map3 =
new EnumMap<weekday,Integer>(weekday.class);
//associate values in Map1
Map1.put(weekday.RED, 1);
Map1.put(weekday.BLUE, 2);
Map1.put(weekday.GREEN, 3);
//associate values in Map2
Map2.put(weekday.RED, 1);
Map2.put(weekday.BLUE, 2);
Map2.put(weekday.GREEN, 3);
//associate values in Map3
Map3.put(weekday.RED, 10);
Map3.put(weekday.BLUE, 20);
Map3.put(weekday.GREEN, 30);
//check if Map1 and Map2 are equal
System.out.println("Map1 and Map2 are equal? - " + Map1.equals(Map2));
//check if Map1 and Map2 are equal
System.out.println("Map1 and Map3 are equal? - " + Map1.equals(Map3));
}
}
The output of the above code will be:
Map1 and Map2 are equal? - true Map1 and Map3 are equal? - false
❮ Java.util - EnumMap
