The Java.util.EnumMap.clone() method in Java is used to copy the mapped values of one map to another. It basically creates a shallow copy of this map.
Syntax:
Enum_map_2 = Enum_map_1.clone()
Parameters: The method does not accept any argument.
Return Value: The method returns a shallow copy of a EnumMap.
Below programs illustrate the Java.util.EnumMap.clone() method
Program 1:
// Java program to demonstrate clone() method import java.util.*;
// An enum of fruits price is created public enum Price_of_Fruits {
Orange,
Apple,
Banana,
Pomegranate,
Guava
}; class Enum_map {
public static void main(String[] args)
{
EnumMap<Price_of_Fruits, Integer> mp1 = new EnumMap<Price_of_Fruits,
Integer>(Price_of_Fruits. class );
EnumMap<Price_of_Fruits, Integer> mp2 = new EnumMap<Price_of_Fruits,
Integer>(Price_of_Fruits. class );
// Values are associated in mp1
mp1.put(Price_of_Fruits.Orange, 30 );
mp1.put(Price_of_Fruits.Apple, 60 );
mp1.put(Price_of_Fruits.Banana, 40 );
mp1.put(Price_of_Fruits.Pomegranate, 120 );
mp1.put(Price_of_Fruits.Guava, 20 );
// Price of fruits in mp1
System.out.println( "Price of fruits in 1st map " + mp1);
// Copying the values of mp1 to mp2
mp2 = mp1.clone();
// Price of fruits in mp2
System.out.println( "Price of fruits in 2nd map " + mp2);
}
} |
Output:
Price of fruits in 1st map {Orange=30, Apple=60, Banana=40, Pomegranate=120, Guava=20} Price of fruits in 2nd map {Orange=30, Apple=60, Banana=40, Pomegranate=120, Guava=20}
Program 2:
// Java program to demonstrate clone() method import java.util.*;
// An enum of gfg ranking is created public enum gfg_ranking {
Global_2018,
India_2018
}; class Enum_map {
public static void main(String[] args)
{
EnumMap<gfg_ranking, Integer> mp1 = new EnumMap<gfg_ranking,
Integer>(gfg_ranking. class );
EnumMap<gfg_ranking, Integer> mp2 = new EnumMap<gfg_ranking,
Integer>(gfg_ranking. class );
// Values are associated in mp1
mp1.put(gfg_ranking.Global_2018, 800 );
mp1.put(gfg_ranking.India_2018, 72 );
// Price of fruits in mp1
System.out.println( "GeeksforGeeks ranking in first map " + mp1);
// Copying the values of mp1 to mp2
mp2 = mp1.clone();
// Price of fruits in mp2
System.out.println( "GeeksforGeeks ranking in second map " + mp2);
}
} |
Output:
GeeksforGeeks ranking in first map {Global_2018=800, India_2018=72} GeeksforGeeks ranking in second map {Global_2018=800, India_2018=72}