ArrayDeque removeLastOccurrence() Method in Java

Last Updated : 10 Dec, 2018

The java.util.ArrayDeque.removeLastOccurrence(Object) method in Java is used to remove the last occurrence of a specific element from this deque. If the element is present only once, then that element is removed and true is returned. If no such element is removed then false is returned.

Syntax:

Array_Deque.removeLastOccurrence(Object O)

Parameters: The method takes one parameter O of ArrayDeque type which refers to the element whose last occurrence is to be removed.

Return Value: This method returns true if the element is present in the Deque else it returns false.

Below programs illustrate the Java.util.ArrayDeque.removeLastOccurrence() method:

Program 1:

// Java code to illustrate removeLastOccurrence() 
import java.util.*; 
  
public class ArrayDequeDemo { 
    public static void main(String args[]) 
    { 
        // Creating an empty ArrayDeque 
        Deque<String> de_que = new ArrayDeque<String>(); 
  
        // Use add() method to add elements into the Deque 
        de_que.add("Welcome"); 
        de_que.add("To"); 
        de_que.add("Geeks"); 
        de_que.add("For"); 
        de_que.add("Geeks"); 
  
        // Displaying the ArrayDeque 
        System.out.println("Initial ArrayDeque: " + de_que); 
  
        // Removing elements using removeLastOccurrence() method 
        de_que.removeLastOccurrence("Geeks"); 
        de_que.removeLastOccurrence("For"); 
  
        // Displaying the ArrayDeque after removal 
        System.out.println("ArrayDeque after removing "
                           + "elements: " + de_que); 
    } 
} 

Output:

Initial ArrayDeque: [Welcome, To, Geeks, For, Geeks]
ArrayDeque after removing elements: [Welcome, To, Geeks]

Program 2:

// Java code to illustrate removeLastOccurrence() 
import java.util.*; 
  
public class ArrayDequeDemo { 
    public static void main(String args[]) 
    { 
        // Creating an empty ArrayDeque 
        Deque<Integer> de_que = new ArrayDeque<Integer>(); 
  
        // Use add() method to add elements into the Deque 
        de_que.add(10); 
        de_que.add(15); 
        de_que.add(30); 
        de_que.add(20); 
        de_que.add(5); 
  
        // Displaying the ArrayDeque 
        System.out.println("Initial ArrayDeque: " + de_que); 
  
        // Removing elements using removeLastOccurrence() method 
        de_que.removeLastOccurrence(30); 
        de_que.removeLastOccurrence(5); 
  
        // Displaying the ArrayDeque after removal 
        System.out.println("ArrayDeque after removing "
                           + "elements: " + de_que); 
    } 
} 

Output:

Initial ArrayDeque: [10, 15, 30, 20, 5]
ArrayDeque after removing elements: [10, 15, 20]

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