TreeMap : clone() : Returns a shallow copy of this HashMap instance

public Object clone()

Returns a shallow copy of this HashMap instance.

import java.util.*;

class TreeMapClone{
  public static void main(String args[]){
    TreeMap<Integer, String> myMap1 = new TreeMap<> ();
  Object myMap2;
  
  /* Add data to the myMap1 */
  myMap1.put(1, "First");
  myMap1.put(2, "Second");
  myMap1.put(3, "Third");
  myMap1.put(4, "Fourth");
  
  System.out.println("Data in myMap1 is");
  System.out.println(myMap1);
  
  System.out.println("\nCloning myMap1 to myMap2");
  myMap2 = myMap1.clone();
  
  System.out.println("\nData in myMap2 is");
  System.out.println(myMap2);
  }
}

Output

Data in myMap1 is
{1=First, 2=Second, 3=Third, 4=Fourth}

Cloning myMap1 to myMap2

Data in myMap2 is
{1=First, 2=Second, 3=Third, 4=Fourth}

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