The java.util.TreeMap.clone() method is used to return a shallow copy of the mentioned treemap. It just creates a copy of the map.
Syntax:
Tree_Map.clone()
Parameters: The method does not take any parameters.
Return Value: The method just returns a copy of the TreeMap.
Below programs are used to illustrate the working of java.util.TreeMap.clone() Method:
Program 1: Mapping String Values to Integer Keys.
// Java code to illustrate the clone() method import java.util.*; public class Tree_Map_Demo { public static void main(String[] args) { // Creating an empty TreeMap TreeMap<Integer, String> tree_map = new TreeMap<Integer, String>(); // Mapping string values to int keys tree_map.put(10, "Geeks"); tree_map.put(15, "4"); tree_map.put(20, "Geeks"); tree_map.put(25, "Welcomes"); tree_map.put(30, "You"); // Displaying the TreeMap System.out.println("Initial Mappings are: " + tree_map); // Displaying the cloned TreeMapusing clone() System.out.println("The cloned map look like this: " + tree_map.clone()); } } |
Program 2: Mapping Integer Values to String Keys.
// Java code to illustrate the clone() method import java.util.*; public class Tree_Map_Demo { public static void main(String[] args) { // Creating an empty TreeMap TreeMap<String, Integer> tree_map = new TreeMap<String, Integer>(); // Mapping int values to string keys tree_map.put("Geeks", 10); tree_map.put("4", 15); tree_map.put("Geeks", 20); tree_map.put("Welcomes", 25); tree_map.put("You", 30); // Displaying the TreeMap System.out.println("Initial Mappings are: " + tree_map); // Displaying the cloned TreeMapusing clone() System.out.println("The cloned map look like this: " + tree_map.clone()); } } |
Note: The same operation can be performed with any type of Mappings with variation and combination of different data types.
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