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Java ArrayDeque clear() Method with Example

ArrayDeque Class clear() method: Here, we are going to learn about the clear() method of ArrayDeque Class with its syntax and example.
Submitted by Preeti Jain, on January 08, 2020

ArrayDeque Class clear() method

• clear() Method is available in java.lang package.
• clear() Method is used to delete or clear all of the elements from this deque.
• clear() Method is a non-static method, it is accessible with the class object only and if we try to access the method with the class name then we will get an error.
• clear() Method does not throw an exception at the time of clearing all of the elements from deque.

Syntax:

    public void clear();

Parameter(s):

• It does not accept any parameter.

Return value:

The return type of the method is void, it returns nothing.

Example:

// Java program to demonstrate the example 
// of void clear() method of ArrayDeque 

import java.util.*;

public class ClearOfArrayDeque {
    public static void main(String[] args) {
        // Creating an ArrayDeque with initial capacity of
        // storing elements
        Deque < String > d_queue = new ArrayDeque < String > (10);

        // By using add() method to add elements
        // in ArrayDeque
        d_queue.add("C");
        d_queue.add("C++");
        d_queue.add("Java");
        d_queue.add("Php");
        d_queue.add("DotNet");

        // Display Deque Elements
        System.out.println("d_queue before clear(): ");
        System.out.println("ArrayDeque = " + d_queue);

        // By using clear() method to clear the elements
        // from ArrayDeque
        d_queue.clear();

        System.out.println();

        // Display Deque Elements
        System.out.println("d_queue after clear(): ");
        System.out.println("ArrayDeque = " + d_queue);
    }
}

Output

d_queue before clear(): 
ArrayDeque = [C, C++, Java, Php, DotNet]

d_queue after clear(): 
ArrayDeque = []