Java Deque pollLast() Method with Examples

by Online Tutorials Library July 22, 2022

Java Deque pollLast() Method

The pollLast() method of Java Deque Interface is used to retrieve and remove the last element of the deque. The method may return null if the given deque is empty.

Syntax:

Parameter:

Return:

The above method is used to return the tail of the deque. On the other hand, if the deque is empty, the method may return null.

Example 1

  import java.util.ArrayDeque;  import java.util.Deque;  public class JavaDequepollLastExample1 {  public static void main(String[] args) {     Deque<String> deque = new ArrayDeque<>();  deque.offer(“Hello”);  deque.offer(” “);  deque.offer(“World”);  String val = deque.pollLast();  System.out.println(“The last string is given as : “+val);  System.out.println(“The remaining deque is : “+deque);  }  }   

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Output:

The last string is given as : World  The remaining deque is : [Hello,  ]

Example 2

  import java.util.ArrayDeque;  import java.util.Deque;  public class JavaDequepollLastExample2 {  public static void main(String[] args) {     Deque<Float> deque = new ArrayDeque<>();  deque.offer(24f);  deque.offer(56.9f);  deque.offer(98f);  Float val = deque.pollLast();  System.out.println(“The last float value is given as : “+val);  System.out.println(“The remaining deque is : “+deque);  }  }  

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Output:

The last float value is given as : 98.0  The remaining deque is : [24.0, 56.9]

Example 3

  import java.util.ArrayDeque;  import java.util.Deque;  public class JavaDequepollLastExample3 {  public static void main(String[] args) {     Deque<Character> deque = new ArrayDeque<>();    deque.offer(‘I’);    deque.offer(‘N’);    deque.offer(‘D’);    deque.offer(‘I’);    deque.offer(‘A’);    deque.offer(‘N’);    deque.offer(‘S’);    Character val = deque.pollLast();    System.out.println(“The LAST character value is given as : “+val);  System.out.println(“The final deque is given as : “);      for (Character character : deque) {  System.out.println(character);      }       }    }  

Test it Now

Output:

The LAST character value is given as : S  The final deque is given as :   I  N  D  I  A  N

Next TopicJava Deque

add()addAll()addfirst()addlast()contains()descendingiterator()element()getfirst()getlast()iterator java deque java tutorial methods offer()offerfirst()offerlast()peek()peekfirst()peeklast()poll()pollfirst()polllast()

Java Deque pollLast() Method with Examples

Java Deque pollLast() Method

Syntax:

Parameter:

Return:

Example 1

Example 2

Example 3

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