Java中的Java.util.EnumSet.clone()方法用于返回现有或此集的浅表副本。

句法:

Enum_Set_2 = Enum_Set_1.clone()

参数:该方法不接受任何参数。

返回值:该方法不返回任何值。

下面的程序说明了Java.util.EnumSet.clone()方法的工作原理

程序1:

// Java program to demonstrate clone() method
import java.util.*;
 
// Creating an enum of GFG type
enum GFG {
    Welcome,
    To,
    The,
    World,
    of,
    Geeks
}
;
 
public class Enum_Set_Demo {
 
    public static void main(String[] args)
    {
 
        // Creating an empty EnumSet
        // Getting all elements from GFG
        EnumSet<GFG> e_set = EnumSet.allOf(GFG.class);
        ;
 
        // Displaying the empty EnumSet
        System.out.println("Initial set: " + e_set);
 
        // Cloning the set
        EnumSet<GFG> final_set = e_set.clone();
 
        // Displaying the final set
        System.out.println("The updated set is:" + final_set); 
    }
}

输出:

Initial set: [Welcome, To, The, World, of, Geeks]
The updated set is:[Welcome, To, The, World, of, Geeks]

程序2:

// Java program to demonstrate clone() method
import java.util.*;
 
// Creating an enum of CARS type
enum CARS {
    RANGE_ROVER,
    MUSTANG,
    CAMARO,
    AUDI,
    BMW
}
;
 
public class Enum_Set_Demo {
 
    public static void main(String[] args)
    {
 
        // Creating an empty EnumSet
        // Getting all elements from CARS
        EnumSet<CARS> e_set = EnumSet.allOf(CARS.class);
        ;
 
        // Displaying the empty EnumSet
        System.out.println("Initial set: " + e_set);
 
        // Cloning the set
        EnumSet<CARS> final_set = e_set.clone();
 
        // Displaying the final set
        System.out.println("The updated set is:" + final_set); 
    }
}

输出:

Initial set: [RANGE_ROVER, MUSTANG, CAMARO, AUDI, BMW]
The updated set is:[RANGE_ROVER, MUSTANG, CAMARO, AUDI, BMW]

 
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