Hashtable clear() in Java

clear(): This method is available in java.util.Hashtable class of Java.

Syntax:

void java.util.Hashtable.clear()

This method clears this hashtable so that it contains no keys.

Parameters: NA

Returns: NA

Exceptions: NA

Approach

Java

import java.util.Hashtable;

public class Hashtableclear {
    public static void main(String[] args) {
        Hashtable<String, Integer> hashtable = 
                          new Hashtable<String, Integer>();

        hashtable.put("Hello", 1);
        hashtable.put("World", 2);

        System.out.println("Hashtable elements
                         before clear: " + hashtable);
        hashtable.clear();
        System.out.println("Hashtable elements
                        after clear: " + hashtable);
    }
}

Output:

Hashtable elements before clear: {World=2, Hello=1}

Hashtable elements after clear: {}