java linkedlist code example

Example 1: java linked list functions

import java.util.LinkedList;
LinkedList<Integer> myList = new LinkedList<Integer>();
myList.add(0);
myList.remove(0);//Remove at index 0
myList.size();
myList.get(0);//Return element at index 0

Example 2: linkedhashmap in java

LinkedHashMap is same as HasHMap just additionally maintains the insertion order.

Example 3: how to declare a linked list in java

LinkedList<String> list=new LinkedList<String>();

Example 4: LinkedHashSet in java

import java.util.LinkedHashSet;
public class LinkedHashsetExample
{
   public static void main(String[] args)
   {
      LinkedHashSet<String> lhs = new LinkedHashSet<String>();
      // add elements to LinkedHashSet
      lhs.add("Anteater");
      lhs.add("Bear");
      lhs.add("Cheetah");
      lhs.add("Deer");
      // will not add new element as Anteater already exists
      lhs.add("Anteater");
      lhs.add("Elephant");
      System.out.println("LinkedHashSet size: " + lhs.size());
      System.out.println("Given LinkedHashSet: " + lhs);
      System.out.println("Deer removed from LinkedHashSet: " + lhs.remove("Deer"));
      System.out.println("Remove Zebra which is not present: " + lhs.remove("Zebra"));
      System.out.println("Check if Anteater is present: " + lhs.contains("Anteater"));
      System.out.println("New LinkedHashSet: " + lhs);
   }
}

Example 5: linkedlist in java

LinkedList not synchronized, doubly linked

Example 6: linked list in java

// Java program to iterate the elements  
// in an LinkedList 
    
import java.util.*;  
    
public class GFG {  
    
    public static void main(String args[])  
    {  
        LinkedList<String> ll  
            = new LinkedList<>();  
    
        ll.add("Geeks");  
        ll.add("Geeks");  
        ll.add(1, "For");  
    
        // Using the Get method and the  
        // for loop  
        for (int i = 0; i < ll.size(); i++) {  
    
            System.out.print(ll.get(i) + " ");  
        }  
    
        System.out.println();  
    
        // Using the for each loop  
        for (String str : ll)  
            System.out.print(str + " ");  
    }  
}