The clear() method of LinkedBlockingDeque erases all the elements that are present in the LinkedBlockingDeque container. The container becomes empty after the function is called.
Syntax:
public void clear()
Parameters: This method does not accepts any parameters
Returns: This method does not returns anything.
Below programs illustrate clear() method of LinkedBlockingDeque:
Program 1:
// Java Program Demonstrate clear()// method of LinkedBlockingDeque  import java.util.concurrent.LinkedBlockingDeque;import java.util.*;  public class GFG {    public static void main(String[] args)        throws IllegalStateException    {          // create object of LinkedBlockingDeque        LinkedBlockingDeque<Integer> LBD            = new LinkedBlockingDeque<Integer>();          // Add numbers to end of LinkedBlockingDeque        LBD.add(7855642);        LBD.add(35658786);        LBD.add(5278367);        LBD.add(74381793);          // before using erase() function        System.out.println("Linked Blocking Deque: " + LBD);          LBD.clear();        // after using erase() function        System.out.println("Linked Blocking Deque: " + LBD);    }} |
Output:
Linked Blocking Deque: [7855642, 35658786, 5278367, 74381793] Linked Blocking Deque: []
Program 2:
// Java Program Demonstrate clear()// method of LinkedBlockingDeque// when the list contains charactersimport java.util.concurrent.LinkedBlockingDeque;import java.util.*;  public class GFG {    public static void main(String[] args)        throws IllegalStateException    {          // create object of LinkedBlockingDeque        LinkedBlockingDeque<String> LBD            = new LinkedBlockingDeque<String>();          // Add numbers to end of LinkedBlockingDeque        LBD.add("1");        LBD.add("2");        LBD.add("3");        LBD.add("4");          // before using erase() function        System.out.println("Linked Blocking Deque: " + LBD);          LBD.clear();        // after using erase() function        System.out.println("Linked Blocking Deque: " + LBD);    }} |
Output:
Linked Blocking Deque: [1, 2, 3, 4] Linked Blocking Deque: []
Reference: https://docs.oracle.com/javase/7/docs/api/java/util/concurrent/LinkedBlockingDeque.html#clear()
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