Java EnumMap - clear() Method
The java.util.EnumMap.clear() method is used to remove all mappings from this map.
Syntax
public void clear()
Parameters
No parameter is required.
Return Value
void type.
Exception
NA
Example:
In the example below, the java.util.EnumMap.clear() method is used to clear all mappings of the given map.
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.SUN, 0);
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);
MyMap.put(weekday.SAT, 6);
//printing EnumMap
System.out.println("Before applying clear() method.");
System.out.println("MyMap contains: " + MyMap);
//using clear method to clear content of the EnumMap
MyMap.clear();
//printing EnumMap
System.out.println("\nAfter applying clear() method.");
System.out.println("MyMap contains: " + MyMap);
}
}
The output of the above code will be:
Before applying clear() method.
MyMap contains: {SUN=0, MON=1, TUE=2, WED=3, THU=4, FRI=5, SAT=6}
After applying clear() method.
MyMap contains: {}
❮ Java.util - EnumMap
