Java EnumMap - containsValue() Method
The java.util.EnumMap.containsValue() method returns true if this map maps one or more keys to the specified value.
Syntax
public boolean containsValue(Object value)
Parameters
value |
Specify the value whose presence in this map is to be tested |
Return Value
Returns true if this map maps one or more keys to the specified value.
Exception
NA.
Example:
In the example below, the java.util.EnumMap.containsValue() method is used to check whether the EnumMap contains any key which is mapped to the specified value or not.
import java.util.*;
public class MyClass {
//creating an enum
public enum weekday{
SUN, MON, TUE, WED, THU, FRI, SAT
}
public static void main(String[] args) {
//creating an EnumMap
EnumMap<weekday,Integer> MyMap =
new EnumMap<weekday,Integer>(weekday.class);
//associate values in the map
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 EnumMap
System.out.println("MyMap contains: " + MyMap);
//check any key mapped to 7
System.out.print("Does MyMap contain any key mapped to 7? - ");
System.out.println(MyMap.containsValue(7));
//check any key mapped 5
System.out.print("Does MyMap contain any key mapped to 5? - ");
System.out.println(MyMap.containsValue(5));
}
}
The output of the above code will be:
MyMap contains: {MON=1, TUE=2, WED=3, THU=4, FRI=5}
Does MyMap contain any key mapped to 7? - false
Does MyMap contain any key mapped to 5? - true
❮ Java.util - EnumMap
