Program/Source Code:

The source code to insert an element at the end of the LinkedList collection is given below. The given program is compiled and executed successfully.

// Java program to insert an element at the end of 
// the LinkedList collection

import java.util.LinkedList;

public class Main {
  public static void main(String[] args) {
    LinkedList < String > countries = new LinkedList < String > ();

    countries.add("India");
    countries.add("USA");
    countries.add("UK");
    countries.add("CANADA");

    System.out.println("Country names: " + countries);

    countries.addLast("JAPAN");

    System.out.println("Country names: " + countries);
  }
}

Output:

Country names: [India, USA, UK, CANADA]
Country names: [India, USA, UK, CANADA, JAPAN]

Explanation:

In the above program, we imported the "java.util.LinkedList" package to use the LinkedList collection class. Here, we created a class Main. The Main class contains a main() method. The main() method is the entry point for the program.