The LinkedList.addLast()
method in Java is used to add an element at the end of a LinkedList
. This guide will cover the method’s usage, explain how it works, and provide examples to demonstrate its functionality.
Table of Contents
- Introduction
addLast
Method Syntax- Examples
- Adding an Element at the End
- Handling Null Values
- Conclusion
Introduction
The LinkedList.addLast()
method is a member of the LinkedList
class in Java. It allows you to add an element at the end of the LinkedList
, making it the last element in the list. This method is particularly useful for implementing queue-like structures or appending elements in a specific order.
addLast Method Syntax
The syntax for the addLast
method is as follows:
public void addLast(E e)
- e: The element to be added to the end of the
LinkedList
.
Examples
Adding an Element at the End
The addLast
method can be used to add an element at the end of a LinkedList
.
Example
import java.util.LinkedList;
public class AddLastExample {
public static void main(String[] args) {
// Creating a LinkedList of Strings
LinkedList<String> list = new LinkedList<>();
// Adding elements to the LinkedList
list.add("Apple");
list.add("Banana");
// Adding an element at the end of the LinkedList
list.addLast("Orange");
// Printing the LinkedList
System.out.println("LinkedList: " + list);
}
}
Output:
LinkedList: [Apple, Banana, Orange]
Handling Null Values
The addLast
method can handle null
values. Adding a null
value to a LinkedList
will include null
as the last element in the list.
Example
import java.util.LinkedList;
public class AddLastExample {
public static void main(String[] args) {
// Creating a LinkedList of Strings
LinkedList<String> list = new LinkedList<>();
// Adding elements to the LinkedList
list.add("Apple");
list.add("Banana");
// Adding a null element at the end of the LinkedList
list.addLast(null);
// Printing the LinkedList
System.out.println("LinkedList: " + list);
}
}
Output:
LinkedList: [Apple, Banana, null]
Conclusion
The LinkedList.addLast()
method in Java is a simple and effective way to add elements to the end of a LinkedList
. By understanding how to use this method, you can efficiently manage collections of objects in your Java applications. Whether you are adding elements to implement queue-like behavior or handling potential null
values, the addLast
method provides a flexible solution for these tasks.