How do I create a LinkedList?

By Wayan in Core API, Util Package 0 Comment

A linked list is a fundamental data structure in programming. It can store data and a references to the next and/or to the previous node. There can be a singly linked list, a doubly linked list and a circularly linked list.

The code below show you how to use the java.util.LinkedList class to create a linked list. In the example we create a LinkedList to store a string object using the add(Object o) method. After create the list we iterate the list and print out the contents.

package org.kodejava.util;

import java.util.List;
import java.util.LinkedList;

public class LinkedListCreate {
    public static void main(String[] args) {
        // Creates a new instance of java.util.LinkedList and
        // adds five string object into the list.
        List<String> grades = new LinkedList<>();
        grades.add("A");
        grades.add("B");
        grades.add("C");
        grades.add("E");
        grades.add("F");

        // Iterates the LinkedList object using the for each
        // statement.
        for (String grade : grades) {
            System.out.println("Grade: " + grade);
        }
    }
}

This program will produce the following output:

Grade: A
Grade: B
Grade: C
Grade: E
Grade: F
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