The java.util.EnumMap.remove(Object key) method removes the mapping for this key from this map if present.
Following is the declaration for java.util.EnumMap.remove() method
public V remove(Object key)
key − the key whose mapping is to be removed from the map
This method returns the previous value associated with specified key, or null if there was no entry for key.
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The following example shows the usage of java.util.EnumMap.remove() method.
package com.tutorialspoint; import java.util.*; public class EnumMapDemo { // create an enum public enum Numbers { ONE, TWO, THREE, FOUR, FIVE }; public static void main(String[] args) { EnumMap<Numbers, String> map = new EnumMap<Numbers, String>(Numbers.class); // assosiate values in map map.put(Numbers.ONE, "1"); map.put(Numbers.TWO, "2"); map.put(Numbers.THREE, "3"); map.put(Numbers.FOUR, "4"); // print the map System.out.println("Map: " + map); // remove value from Numbers.THREE map.remove(Numbers.THREE); // print the updated map System.out.println("Updated Map: " + map); } }
Let us compile and run the above program, this will produce the following result −
Map: {ONE=1, TWO=2, THREE=3, FOUR=4} Map: {ONE=1, TWO=2, FOUR=4}