ConcurrentLinkedDeque clear() method in Java
The java.util.concurrent.ConcurrentLinkedDeque.clear() method is an inbuilt method in Java which removes the elements in the Deque.
Syntax:
public void clear()
Parameters: The method do not accepts any parameter.
Return Value: The function does not return anything
Below programs illustrate the ConcurrentLinkedDeque.clear() method:
Program 1:
// Java Program to Demonstrate clear()// method of ConcurrentLinkedDeque  import java.util.concurrent.*;  class GFG {    public static void main(String[] args)    {          // Creating an empty Deque        ConcurrentLinkedDeque<String> cld            = new ConcurrentLinkedDeque<String>();          // Add elements into the Deque        cld.add("Welcome");        cld.add("To");        cld.add("Geeks");        cld.add("4");        cld.add("Geeks");          // Displaying the Deque        System.out.println("ConcurrentLinkedDeque: "                           + cld);          // Remove all elements of the Deque using clear()        cld.clear();          // Displaying message        System.out.println("\nConcurrentLinkedDeque cleared\n");          // Displaying the Deque        System.out.println("ConcurrentLinkedDeque: "                           + cld);    }} |
Output:
ConcurrentLinkedDeque: [Welcome, To, Geeks, 4, Geeks] ConcurrentLinkedDeque cleared ConcurrentLinkedDeque: []
Program 2:
// Java Program to Demonstrate clear()// method of ConcurrentLinkedDeque  import java.util.concurrent.*;  class GFG {    public static void main(String[] args)    {          // Creating an empty Deque        ConcurrentLinkedDeque<Integer> cld            = new ConcurrentLinkedDeque<Integer>();          // Add elements into the Deque        cld.add(10);        cld.add(20);        cld.add(30);        cld.add(40);        cld.add(50);          // Displaying the Deque        System.out.println("ConcurrentLinkedDeque: "                           + cld);          // Remove all elements of the Deque using clear()        cld.clear();          // Displaying message        System.out.println("\nConcurrentLinkedDeque cleared\n");          // Displaying the Deque        System.out.println("ConcurrentLinkedDeque: "                           + cld);    }} |
Output:
ConcurrentLinkedDeque: [10, 20, 30, 40, 50] ConcurrentLinkedDeque cleared ConcurrentLinkedDeque: []
Reference: https://docs.oracle.com/javase/9/docs/api/java/util/concurrent/ConcurrentLinkedDeque.html#clear–
