In Previous post we have learn how to convert LinkedList to Array in Java . In This tutorial we will see how to convert array into linkedlist in java. There are following ways for create new linkedlist from array java .
Method 1. Conversion array to Linkedlist using Arrays.asList()
Arrays.asList() Method returns a fixed-size list backed by the specified array in java . This returned list we use in creating LinkedList in java . Let’s see this by code
import java.util.Arrays;
import java.util.LinkedList;
public class ArrayToLinkedList {
public static void main(String[] args) {
String [] arr = {"java","php" ,"spring","mysql","android"};
/*
creating linkedlist using list
return by Arrays.asList(arr)
*/
LinkedList<String> linkedList = new LinkedList<String>(Arrays.asList(arr));
//print linkedList
System.out.println("linkedList is = "+ linkedList);
}
}Output :
linkedList is = [java, php, spring, mysql, android]Method 2. Conversion array to Linkedlist using Collections.addAll()
Adds all of the specified elements to the given collection read more about Collection.addAll() Method here
import java.util.Collections;
import java.util.LinkedList;
public class ArrayToLinkedListByAllAdd {
public static void main(String[] args) {
String [] arr = {"java","php" ,"spring","mysql","android"};
LinkedList<String> linkedList = new LinkedList<String>();
/*
Adds all of the specified elements to the
specified collection.
*/
Collections.addAll(linkedList,arr);
System.out.println("linkedList is ="+ linkedList);
}
}Output :
linkedList is =[java, php, spring, mysql, android]Method 3. Convert Array to LinkedList using add() method
In order to create Linkedlist we iterate array and one by one add element in Linkedlist
import java.util.LinkedList;
public class ArrayToLinkedListByAdd {
public static void main(String[] args) {
String [] arr = {"java","php" ,"spring","mysql","android"};
LinkedList<String> linkedList = new LinkedList<String>();
//add array element in linkedList one by one using add()
for (int i = 0; i < arr.length; i++) {
linkedList.add(arr[i]) ;
}
//print linkedList
System.out.println("list is ="+linkedList);
}
}Output :
list is =[java, php, spring, mysql, android]