EnumMap remove() Method in Java
Last Updated :
13 Jul, 2018
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The Java.util.EnumMap.remove(key) method in Java is used to remove the specified key from the map.
Syntax:
Java
Java
remove(Object key)Parameters: The method takes one parameter key which refers to the key whose mapping is to be removed. Return Value: The method does not return any value. Below programs illustrate the working of remove(key) function: Program 1:
// Java program to demonstrate remove()
import java.util.*;
// An enum of geeksforgeeks
public enum gfg {
India_today,
United_States_today
}
;
class Enum_demo {
public static void main(String[] args)
{
EnumMap<gfg, String> mp = new
EnumMap<gfg, String>(gfg.class);
// Values are associated
mp.put(gfg.India_today, "61.8%");
mp.put(gfg.United_States_today, "18.2%");
// Prints the map
System.out.println("The EnumMap: " + mp);
// Remove mapping of this key
mp.remove(gfg.United_States_today);
// Prints the final map
System.out.println("Map after removal: " + mp);
}
}
Output:
Program 2:
The EnumMap: {India_today=61.8%, United_States_today=18.2%}
Map after removal: {India_today=61.8%}
// Java program to demonstrate the working of keySet()
import java.util.*;
// an enum of geeksforgeeks
// rank in India and United States
public enum gfg {
India_today,
United_States_today
}
;
class Enum_demo {
public static void main(String[] args)
{
EnumMap<gfg, Integer> mp = new
EnumMap<gfg, Integer>(gfg.class);
// Values are associated
mp.put(gfg.India_today, 69);
mp.put(gfg.United_States_today, 1073);
// Prints the map
System.out.println("The EnumMap: " + mp);
// Remove mapping of this key
mp.remove(gfg.United_States_today);
// Prints the final map
System.out.println("Map after removal: " + mp);
}
}
Output:
The EnumMap: {India_today=69, United_States_today=1073}
Map after removal: {India_today=69}
