Write a Java program to remove all the mappings from a map

This is a Java program that demonstrates how to remove all elements from a HashMap. Here's how it works:

First, a HashMap object is created using the HashMap class. This HashMap will be used to store integer keys and string values.
Key-value pairs are added to the HashMap using the put() method.
The contents of the HashMap are printed to the console using the println() method.
The clear() method is used to remove all elements from the HashMap.
The contents of the HashMap are printed again to the console using the println() method.

Source Code

import java.util.*;  
public class RemoveAll
{  
	public static void main(String args[])
	{
		HashMap <Integer,String> hash_map = new HashMap <Integer,String> ();
		hash_map.put(1, "Pink");
		hash_map.put(2, "Green");
		hash_map.put(3, "Red");
		hash_map.put(4, "White");
		hash_map.put(5, "Blue");
		hash_map.put(6, "Black");
		hash_map.put(7, "Orange");		
		System.out.println("The Original linked map : " + hash_map);
 
		hash_map.clear();// Removing all the elements
		System.out.println("The New map : " + hash_map);
	}
}

Output

The Original linked map : {1=Pink, 2=Green, 3=Red, 4=White, 5=Blue, 6=Black, 7=Orange}
The New map : {}

Write a Java program to remove all the mappings from a map

Source Code

Output

Example Programs

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