The Java.util.EnumMap.remove(key) method in Java is used to remove the specified key from the map.
Syntax:
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 neveropenpublic 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:
The EnumMap: {India_today=61.8%, United_States_today=18.2%}
Map after removal: {India_today=61.8%}
Program 2:
// Java program to demonstrate the working of keySet()import java.util.*; // an enum of neveropen// rank in India and United Statespublic 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}
