Java: Clone a tree set list to another tree set

Last update on May 22 2025 13:15:43 (UTC/GMT +8 hours)

6. Clone TreeSet

Write a Java program to clone a tree set list to another tree set.

Sample Solution:

Java Code:

import java.util.TreeSet;
import java.util.Iterator;

  public class Exercise6 {
  public static void main(String[] args) {
    // create an empty tree set
     TreeSet<String> t_set = new TreeSet<String>();
   // use add() method to add values in the tree set
          t_set.add("Red");
          t_set.add("Green");
          t_set.add("Black");
          t_set.add("Pink");
          t_set.add("orange");
     
   System.out.println("Original tree set:" + t_set);  
    TreeSet<String> new_t_set = (TreeSet<String>)t_set.clone();
          System.out.println("Cloned tree list: " + t_set);      
     }
 }

Sample Output:

Note: Exercise6.java uses unchecked or unsafe operations.              
Note: Recompile with -Xlint:unchecked for details.                     
Original tree set:[Black, Green, Pink, Red, orange]                    
Cloned tree list: [Black, Green, Pink, Red, orange]

Flowchart:

For more Practice: Solve these Related Problems:

Write a Java program to clone a TreeSet using the clone() method and verify that modifications in the clone do not affect the original.
Write a Java program to perform a deep copy of a TreeSet of custom objects by implementing the Cloneable interface.
Write a Java program to clone a TreeSet using Java streams and then compare the cloned set with the original for equality.
Write a Java program to clone a TreeSet and then sort the clone in reverse order using a custom comparator.

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Java Code Editor:

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