📜  Java中的 LinkedHashSet clone() 方法及示例

📅  最后修改于: 2022-05-13 01:54:34.372000             🧑  作者: Mango

Java中的 LinkedHashSet clone() 方法及示例

LinkedHashSet 类的 clone() 方法用于返回上述哈希集的浅表副本。它只是创建集合的副本。

--> java.util Package
     --> LinkedHashSet Class
         --> clone() Method   

句法:

linked_hash_set.clone()

参数:该方法不带任何参数。

返回类型:该方法仅返回 LinkedHashSet 的副本。

例子:

Java
// Java Program to illustrate clone() Method
// of LinkedHashSet Class
  
// Importing required classes
import java.io.*;
import java.util.LinkedHashSet;
  
// Main class
public class GFG {
  
    // Main driver method
    public static void main(String args[])
    {
        // Creating an empty LinkedHashSet
        LinkedHashSet set
            = new LinkedHashSet();
  
        // Adding elements into the Set
        // using add() method
        set.add("Welcome");
        set.add("To");
        set.add("Geeks");
        set.add("4");
        set.add("Geeks");
  
        // Displaying the LinkedHashSet
        System.out.println("LinkedHashSet: " + set);
  
        // Creating a new cloned Set
        LinkedHashSet cloned_set = new LinkedHashSet();
  
        // Cloning the above Set
        // using clone() method
        cloned_set = (LinkedHashSet)set.clone();
  
        // Displaying the new Set after Cloning
        System.out.println("The new set: " + cloned_set);
    }
}


输出:
LinkedHashSet: [Welcome, To, Geeks, 4]
The new set: [Welcome, To, Geeks, 4]