how to convert array to arraylist java code example

Example 1: java array to arraylist

List<Element> list = Arrays.asList(array);

Example 2: how to cast arraylist to array in java

import java.util.ArrayList;
public class ListToArray {
   public static void main(String args[]){
      ArrayList<String> list = new ArrayList<String>();
      list.add("Apple");
      list.add("Orange");
      list.add("Banana");

      System.out.println("Contents of list ::"+list);
      String[] myArray = new String[list.size()];
      list.toArray(myArray);

      for(int i=0; i<myArray.length; i++){
         System.out.println("Element at the index "+i+" is ::"+myArray[i]);
      }
   }
}

Example 3: convert array of int to arraylist java

int[] ints = {1, 2, 3};
List<Integer> intList = new ArrayList<Integer>(ints.length);
for (int i : ints)
{
    intList.add(i);
}

Example 4: convert arraylist to array in java

Integer[] arr = new Integer[al.size()]; 
for (int i = 0; i < al.size(); i++) 
     arr[i] = al.get(i);